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Flåm Utvikling

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Centralized traffic control ( CTC ) is a form of railway signalling that originated in North America. CTC consolidates train routing decisions that were previously carried out by local signal operators or the train crews themselves. The system consists of a centralized train dispatcher 's office that controls railroad interlockings and traffic flows in portions of the rail system designated as CTC territory. One hallmark of CTC is a control panel with a graphical depiction of the railroad. On this panel, the dispatcher can keep track of trains' locations across the territory that the dispatcher controls. Larger railroads may have multiple dispatcher's offices and even multiple dispatchers for each operating division. These offices are usually located near the busiest yards or stations , and their operational qualities can be compared to air traffic towers .

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90-618: Flåm Utvikling manages the tourist line Flåm Line ( Flåmsbana ) in Vestland county, Norway . Flåm Utvikling AS is a tourism company whose aim is to strengthen and further develop the tourism industry in Flåm in Aurland municipality. The company is a subsidiary of Aurland Ressursutvikling and was founded in 1997. From 1 January 1998, Flåm Utvikling took over operational, product development and marketing responsibility for Flåmsbana. However, NSB

180-464: A Bo'Bo' wheel configuration. The locomotives weighed 48 tonnes (47 long tons; 53 short tons) and the maximum permitted train weight was 85 tonnes (84 long tons; 94 short tons). If the trains were to stop at Kårdal, the weight was further limited to 65 tonnes (64 long tons; 72 short tons). Initially, there were three trains on the Bergen Line in each direction per day, so only a single locomotive

270-586: A fast ferry service was introduced in Sogn with direct services to Bergen. In 1991, the Gudvangen Tunnel opened, giving Flåm a road connection to Gudvangen and terminating the ferry service; also the private road built eastbound over the mountain for hydro-power plants was converted to national road (no 50) and improved. NSB was losing money on the line, in part because of very low revenue per rider. The same ticket prices were charged as elsewhere, based on

360-479: A horseshoe curve and the 880-meter-long (2,890 ft) Vatnahalsen Tunnel. It exits the tunnel onto an artificial shelf on a cliff which falls several hundred meters down. Reinunga Station is located 2.20 kilometers (1.37 mi) from Myrdal and at 767 meters (2,516 ft) elevation. It is followed by Kjosfossen Station , 4.40 kilometers (2.73 mi) from Myrdal and 670 meters (2,200 ft) AMSL, which serves no other purpose than allowing tourists to look at

450-427: A passing siding , or they may take the form of a crossover , which allows movement to an adjacent track, or a "turnout" which routes a train to an alternate track (or route). Although some railroads still rely on older, simpler electronic lighted displays and manual controls, in modern implementations, dispatchers rely on computerized systems similar to supervisory control and data acquisition ( SCADA ) systems to view

540-484: A 1,000 cubic meters (35,000 cu ft) landslide took place above Berekvam. On 8 February 1928, an avalanche did some damage to the right-of-way near Nåli. The tunnels were the most difficult and time-consuming part of construction. Of the twenty tunnels, machines were only used for the Nåli and Vatnahalsen Tunnels—the rest were built by hand. Hand-construction was done by drilling up to 4.2 meters (14 ft) through

630-492: A 30 percent discount. Travel time varies between 50 and 59 minutes between the end stations. In 2007, the line was the third-most visited tourist attraction in Norway and carried 547,000 passengers in 2010. Between 1998 and 2015, the service is provided by push–pull trains consisting of an El 17 at each end and with B3 carriages. The locomotives were built by Henschel in 1987, with electrical equipment from NEBB. They have

720-490: A fee per kilometer; the low speed combined with a lot of free travelers using InterRail tickets gave little revenue. From 1991, the ticket prices were increased as if the line was 20 kilometers (12 mi) longer. In 1992, a new station building was taken into use at Flåm. During the 1990s, X10 commuter trains from Stockholm were borrowed during the summer for extra trains. These trains had larger windows than Class 69, giving better views. A museum and documentation center

810-478: A locomotive at each end of six B3 passenger cars on the 20 km long Flåmsbana. The rolling stock is painted green. The El 17 replaced the aging El 11 in 1998. Fl%C3%A5m Line The Flåm Line ( Norwegian : Flåmsbana ) is a 20.2-kilometer (12.6 mi) long railway line between Myrdal and Flåm in Aurland Municipality , in Vestland county, Norway . A branch line of

900-599: A power output of 1,700 kilowatts (2,300 hp). The costs for the project ended at NOK 26,651,900, of which NOK 22.0 million was for the railway. This total included NOK 2.3 million for a power station and NOK 1.2 million for a ferry quay at Flåm. The largest cost was for earthwork, which ended at NOK 9.1 million; other major costs were NOK 2.4 million for rolling stock, NOK 1.6 million for stations, NOK 1.2 for tracks, NOK 1.5 million for snow protection and NOK 675,000 for electrification. Regular operation with electric locomotives

990-485: A power output of 3,000 kilowatts (4,000 hp) and a Bo'Bo' wheel arrangement. Starting in 2014, El 18 replaced the El 17. Centralized traffic control Key to the concept of CTC is the notion of traffic control as it applies to North American railroads. Trains moving in opposite directions on the same track cannot pass each other without special infrastructure such as sidings and switches that allow one of

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1080-426: A proposal for a 1,067 mm ( 3 ft 6 in ) narrow gauge railway which would be 18.0 kilometers (11.2 mi) long. Most of the railway would be built as an adhesion railway with a 2.5 percent gradient, although part of it would be a rack railway with a gradient of 10.0 percent. It was at the time estimated to cost 3.3 million Norwegian krone (NOK). In 1904, a radically different route to Sognefjord

1170-593: A regular schedule was in October 1939, when a freight train between Myrdal and Berekvam ran three times a week. However, this service was stopped by the end of the month. With the German occupation of Norway in 1940, work started later in the season, but the German authorities wanted to speed up the work to make the line usable for steam trains that same year. They scheduled the line for completion in 1942. Track laying work

1260-436: A siding to meet another train, wait at a specified location for further instructions, run later than scheduled, or numerous other actions. The development of Direct Traffic Control via radio or telephone between dispatchers and train crews made telegraph orders largely obsolete by the 1970s. Where traffic density warranted it, multiple tracks could be provided, each with a timetable-defined flow of traffic which would eliminate

1350-463: A single common communications link and relay-based telecommunications technology similar to that used in crossbar switches . Also, instead of only displaying information about trains approaching and passing through interlockings , the CTC machine displayed the status of every block between interlockings, where previously such sections had been considered " dark territory " (i.e., of unknown status) as far as

1440-424: A stretch of single track would cause all of the opposing signals between there and the next passing point to "tumble down" to a Stop position thus preventing opposing trains from entering. In areas of higher traffic density, sometimes bi-directional operation would be established between manned interlocking towers . Each section of bi-directional track would have a traffic control lever associated with it to establish

1530-505: Is displayed via bold or colored lines overlaying the track display, along with tags to identify the train (usually the number of the lead locomotive). Signals which the dispatcher can control are represented as either at Stop (typically red) or "displayed" (typically green). A displayed signal is one which is not displaying Stop and the exact aspect that the crew sees is not reported to the dispatcher. The first CTC installation in Australia

1620-624: Is found on the Nordland Line and the Sørland Line . Other stations received small, wooden buildings with a waiting room, as well as a room for cargo at Vatnahalsen, Håreina and Dalsbotn. Laying of tracks started in 1936, and was assisted by two steam locomotives. The work started at Myrdal and reached Reinunga the first year, Kjosfossen Tunnel the second year and the Blomheller Tunnel in 1939. The first train to operate on

1710-517: Is generally implemented in high-traffic areas where the reduced operating cost from increased traffic density and time savings outweigh the capital cost. Most of BNSF Railway 's and Union Pacific Railroad 's track operates under CTC; the portions that are generally lighter-traffic lines that are operated under Track Warrant Control (BNSF and UP) or Direct Traffic Control (UP). Recently the costs of CTC has fallen as new technologies such as microwave, satellite and rail based data links have eliminated

1800-419: Is located in a mountain pass at 863.6 meters (2,833 ft) above mean sea level (AMSL), while Flåm Station is located at 2.0 meters (6 ft 7 in) AMSL. The line's maximum gradient is 5.5 percent, and 16.1 kilometers (10.0 mi) of the line's 20.20 kilometers (12.55 mi) have at least 2.8 percent gradient. The line has standard gauge and a minimum curve radius of 130 meters (430 ft), and

1890-443: Is located, was inscribed as a World Heritage Site . The line is solely served by a tourist-oriented service operated by Vy on behalf of Flåm Utvikling. From May through September, there are nine or ten departures in each direction per day. In the rest of the year, there are four. Fares do not follow the normal fares for Vy and are considerably higher than on other train routes. InterRail tickets are not valid for free travel, but give

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1980-663: Is owned and operated by the Norwegian National Rail Administration. At Myrdal Station, the Flåm Line runs in the same direction as the trains towards Oslo, but immediately starts running downwards into the Flåmsdalen valley. The first part of the line runs through snow shelters and several short tunnels. Vatnahalsen Station is located 1.13 kilometers (0.70 mi) from Myrdal, at 811 meters (2,661 ft) AMSL. The line then runs through

2070-505: Is still operationally responsible for the train management itself, and the Norwegian Railways is responsible for the track and signaling system. Up until 1998 it was Norges Statsbaner who operated the line, but then Flåm Utvikling took over the role, though NSB still actually operates the trains with the railway line itself is owned by Jernbaneverket . The company operates five El 17 Locomotives , and has two trains with

2160-531: Is the only station to have a passing loop and thus the only location on the line where trains can meet. Because the station is unmanned and lacks CTC, crossing must be performed using flags at day and torches at night, set by personnel who travel from Myrdal or Flåm. At Høga, the railway crosses the river again, this time by the river running in a tunnel under the tracks. The next station is Dalsbotn Station , located 13.90 kilometers (8.64 mi) from Myrdal and at 199 meters (653 ft) AMSL. Just before reaching

2250-503: Is the steepest standard-gauge railway in Europe. Maximum permitted speed upwards is 40 km/h (25 mph), while it is 30 km/h (19 mph) downhill. The line has eight stops, twenty tunnels and one bridge. The line is electrified at 15 kV  16.7 Hz AC using overhead wire , and is equipped with Global System for Mobile Communications – Railway (GSM-R), but lacks centralized traffic control (CTC). The infrastructure

2340-528: The Bergen Line , it runs through the valley of Flåmsdalen and connects the mainline with Sognefjord . The line's elevation difference is 866 meters (2,841 ft); it has ten stations, twenty tunnels and one bridge . The maximum gradient is 5.5 percent (1:18). Because of its steep gradient and picturesque nature, the Flåm Line is now almost exclusively a tourist service and has become the third-most visited tourist attraction in Norway. Construction of

2430-601: The Kapiti Line in 1940, and extended from Paekākāriki to Paraparaumu in 1943; the continuation of tablet control on the short single-track section would have required manned tablet stations with a stationmaster and three (tablet) porters at each end of the section (see North–South Junction ). This was followed on the NIMT by Puketutu- Kopaki in 1945, between Frankton, Hamilton and Taumarunui from 1954 to 1957; and from Te Kauwhata to Amokura in 1954. On other lines, CTC

2520-409: The 1,029-meter-long (3,376 ft) Blomhelleer Tunnel, after which it reaches Blomheller Station , 8.40 kilometers (5.22 mi) from Myrdal and 458 meters (1,503 ft) AMSL. The railway then crosses the river Flåmselvi and runs through a series of short tunnels. At 10.51 kilometers (6.53 mi) from Myrdal, the line reaches Berekvam Station , located at 344 meters (1,129 ft) AMSL. It

2610-559: The 39 mi-long (63 km) portion of single-track line between Armadale , on Perth's south eastern outskirts, and Pinjarra , further south. CTC has since been widely deployed to major interstate railway lines. CTC was first installed in New Zealand between Taumarunui and Okahukura on the heavily trafficked North Island Main Trunk in 1938 followed by Te Kuiti - Puketutu in 1939. and from Tawa Flat to Paekākāriki on

2700-490: The Flåm Line was rebuilt to allow an axle load of 18 tonnes (18 long tons; 20 short tons). El 11 was chosen as El 9's replacement in the mid-1970s, but it was not until November 1980 that El 11.2098 started being rebuilt for its new service. Upgrades included rheostatic brakes and electromagnetic brakes , new speed measurement and curve lights. The locomotive was taken into use on the Flåm Line in June 1982. A year later, El 11.2092

2790-555: The Nordre Bergenhus County (today Sogn og Fjordane County Municipality ) had paid part of the regional financing of the Bergen Line on condition that they receive a branch line to the Sognefjord. The 1920s saw high inflation and large public deficits. Several public committees were created solely to cut costs. One such proposal was to build a road to Flåm, with the proposal being led by Hans Kristian Seip , who

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2880-424: The area around Myrdal. This road was used by horse carriages and later cars, becoming an important access route to the area, but it was too steep and narrow for heavy vehicles. The Hardanger Line , which connected the Bergen Line to Hardangerfjord, opened in 1935, and was the county's first railway to open with electric traction. The first engineering surveys for the Flåm Line were performed in 1893. It resulted in

2970-477: The class were painted in a new green livery and branded as Flåmsbana rather than NSB. Older B3 carriages were renovated, given new panorama windows and painted in the same color scheme and taken into use on the line. In October 2000, NSB sold its shares in Flåm Utvikling to Aurland Ressursutvikling. The line received GSM-R from 1 May 2005. The same year, Nærøyfjord , the neighboring fjord to where Flåm

3060-519: The company saw it as unrealistic to invest so much in a marginal branch line. NSB had also concluded its away-with-the-steam program, and therefore had a lack of locomotives in general. If a new class of locomotives was to be built, it would have to satisfy more than the requirements for the Flåm Line, so NSB instead started investigating whether any of the older models could be used. Tests were performed in 1971 and 1973 with El 11 , built between 1951 and 1964, and El 13 , built between 1957 and 1966. Neither

3150-633: The construction was established in 1923 and was until 1935 located at Voss. In that period, construction was led by Peter Bernhard Kristian Lahlum, who was also responsible for the Hardanger Line. After the Hardanger Line was completed, Lahlum retired, and the office was moved to Flåm where responsibility was taken over by Adolph M. B. Kielland. To start with, there were 120 men working on the construction, although this quickly increased to 220. The numbers fluctuated between that and as low as 80, although hit an all-time high of 280 people in 1937. To house

3240-410: The control and supervision of a central authority. CTC makes use of railway signals to convey the dispatcher's instructions to the trains. These take the form of routing decisions at controlled points that authorize a train to proceed or stop. Local signaling logic will ultimately determine the exact signal to display based on track occupancy status ahead and the exact route the train needs to take, so

3330-437: The direction of traffic on that track. Often, both towers would need to set their traffic levers in the same way before a direction of travel could be established. Block signals in the direction of travel would display according to track conditions and signals against the flow of traffic would always be set to their most restrictive aspect. Furthermore, no train could be routed into a section of track against its flow of traffic and

3420-491: The dispatcher was concerned. The CTC system would allow the flow of traffic to be set over many sections of track by a single person at a single location as well as control of switches and signals at interlockings, which also came to be referred to as control points . CTC machines started out as small consoles in existing towers only operating a few nearby remote interlockings and then grew to control more and more territory, allowing less trafficked towers to be closed. Over time,

3510-449: The dispatcher's control display except as an inert reference. The majority of control points are equipped with remote control, power-operated switches. These switches often are dual-controlled switches , as they may be either remotely controlled by the train dispatcher or by manually operating a lever or pump on the switch mechanism itself (although the train dispatcher's permission is generally required to do so). These switches may lead to

3600-469: The employees, eight barracks were built. Among the first things built were housing and station buildings, which could then be used by people working on the construction. The local economy was stimulated by farmers being paid for transport. Using horses, they would transport tourists by day and building materials by night. The competition was fierce, resulting in fights for customers, although it calmed down after traffic police were introduced. In 1924, there

3690-405: The following year. In 1971 and 1972, it saw a 20-percent increase—the latter representing the first year with InterRail tickets. By then the annual ridership had reached 175,000. In 1970, an additional train was stationed at Flåm, which made it possible to travel a round trip between Flåm and Bergen in a day. Between 1975 and 1982, NSB started running direct trains between Ål and Flåm. In 1978,

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3780-535: The last tunnel, the 424-meter (1,391 ft) long Furuberget Tunnel, the line passes by the waterfall Rjoandefossen , which with a 140-meter (460 ft) vertical drop is one of the line's main attractions. After Håreina Station , located 17.21 kilometers (10.69 mi) from Myrdal at 48 meters (157 ft) elevation, the valley widens and changes character, becoming flatter and with more vegetation. After passing Lunden Station , 18.60 kilometers (11.56 mi) from Myrdal and at 16 meters (52 ft) elevation,

3870-449: The line reaches the terminus at Flåm. Located on Aurlandsfjord , a branch of the Sognefjord, Flåm has 400 residents and is nearly exclusively a tourist area, featuring amongst other things a hotel and a cruise ship port. The station also has a railway museum dedicated to the Flåm Line. Plans to build a railway to connect Norway's two largest cities, Oslo and Bergen , were launched by Andreas Tanberg Gløersen in 1871. He proposed that

3960-418: The line run via Hallingdal and Voss and include two short branch lines which would connect to the two major fjord systems in the area, Sognefjord and Hardangerfjord . The narrow gauge Voss Line from Bergen to Voss opened in 1883, and the Bergen Line was completed as standard gauge in 1909. During the construction of the Bergen Line, the path that ran up Flåmsdalen was upgraded by NSB to allow access to

4050-428: The line started in 1924, with the line opening in 1940. It allowed the district of Sogn access to Bergen and Oslo via the Bergen Line. Electric traction was taken into use in 1944; at first El 9 locomotives were used, and from 1982 El 11 . Until 1991, the train connected with a ferry service from Flåm to Gudvangen . In 1992, freight services were terminated, and due to low ticket prices and high operating costs,

4140-528: The line was nearly closed. In 1998, Flåm Utvikling took over marketing and ticket sale for the line, prices were heavily increased and El 17 locomotives were introduced (replaced by El 18 in 2014). The trains remain operated by the Vy as a subcontractor for Flåm Utvikling, while the line itself is owned and operated by the Bane NOR . The Flåm Line runs from Myrdal on the Bergen Line to Flåm . Myrdal Station

4230-464: The line's capacity would be smaller than predicted and that costs would be three times as high—NOK 5.5 million. The plans were approved by the Ministry of Labour and NSB's main board in 1915. The plans were approved by Parliament in 1916. However, the decision concerning technical specifications was not taken by Parliament until 1923, when it decided that the line was to be electric. The line

4320-413: The line, including a major upgrade to Myrdal and port facilities at Flåm. Myrdal Station was given side tracks and additional buildings to serve transferring passengers, with the upgrades costing NOK 0.5 million. Berekvam was the only place on-route which received a passing loop. Flåm Station cost NOK 0.8 million and was designed in the 1930s NSB simple wooden functionalist style, similar to what

4410-413: The location of trains and the aspect, or display, of absolute signals. Typically, these control machines will prevent the dispatcher from giving two trains conflicting authority without needing to first have the command fail at the remote interlocking. Modern computer systems generally display a highly simplified mock-up of the track, displaying the locations of absolute signals and sidings. Track occupancy

4500-455: The machines were moved directly into dispatcher offices, eliminating the need for dispatchers to first communicate with block operators as middlemen . In the late 20th century, the electromechanical control and display systems were replaced with computer operated displays. While similar signaling control mechanisms have been developed in other countries, what sets CTC apart is the paradigm of independent train movement between fixed points under

4590-443: The mix of rack and adhesion railway, and instead proposed a conventional adhesion line all the way. Engineer Ferdinand Bjerke traveled to Continental Europe to study several combined railways. He published a preliminary report in 1911, which recommended an adhesion railway, although he also felt the need for a detailed study of a rack railway. His final report was finished in 1913, and although it recommended adhesion, it pointed out that

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4680-465: The morning express trains on the Bergen Line started stopping at Myrdal, allowing better access for tourists to the Flåm Line. Traffic increased further until 1980, when it hit 200,000, and then remained stable through the decade. When the line opened, it received a lot of freight traffic for the construction of a power station in Årdal . From the opening, the Flåm Line was the fastest means of transport between Sogn and both Oslo and Bergen, and most post

4770-541: The need for frequent single track-style "meets." Trains running counter to this flow of traffic would still require train orders, but other trains would not. This system was further automated by the use of Automatic Block Signaling and interlocking towers which allowed for efficient and failsafe setting of conflicting routes at junctions and that kept trains following one another safely separated. However, any track that supported trains running bi-directionally, even under ABS protection, would require further protection to avoid

4860-518: The only input required from the CTC system amounts to the go, no-go instruction. Signals in CTC territory are one of two types: an absolute signal , which is directly controlled by the train dispatcher and helps design the limits of a control point, or an intermediate signal , which is automatically controlled by the conditions of the track in that signal's block and by the condition of the following signal. Train dispatchers cannot directly control intermediate signals and so are almost always excluded from

4950-498: The printed schedule could lead to routing errors or even accidents. This was especially common on single-track lines that comprised the majority of railroad route miles in North America. Pre-defined "meets" could lead to large delays if either train failed to show up, or worse, an "extra" train not listed in the timetable could suffer a head-on collision with another train that did not expect it. Therefore, timetable operation

5040-528: The responsibility for infrastructure, retained ownership of the line itself. Flåm Utvikling also started building a cruise ship terminal at Flåm, so tourists could walk ashore and directly to the trains. With the change of ownership, NSB also decided to replace the aging El 11 with El 17 . The locomotives had been delivered in 1987 and were intended for express train service, but had been plagued with technical problems and were not considered reliable enough to operate as single locomotives. The six newest trains of

5130-493: The rock, filling the holes with dynamite and blasting. Construction of tunnels started in 1924 and the first tunnel was completed in 1926; the last tunnel was completed in 1935. On average, tunneling proceeded at between 116 and 180 man-hours per meter (35–55 hr/ft). The work caused death or lifelong respiratory problems through silicosis caused by inhaling the smoke. There were two fatal accidents, one in 1925 and one 1938, both related to tunnel work. Ten stations were built for

5220-437: The same degree flexibility that the manual traffic control has before it, but without the cost and complexity associated with providing a manned operator at the end of every route segment. This was especially true for lightly used lines that could never hope to justify so much overhead . Initially the communication was accomplished by dedicated wires or wire pairs , but later this was supplanted by pulse code systems utilizing

5310-483: The situation of two trains approaching each other on the same section of track. Such a scenario not only represents a safety hazard, but also would require one train to reverse direction to the nearest passing point . Before the advent of CTC there were a number of solutions to this problem that did not require the construction of multiple single direction tracks. Many western railroads used an automatic system called absolute permissive block (APB), where trains entering

5400-447: The summer season, and achieved an 84 percent occupancy rate. The same year, Berekvam Station became unmanned. Traffic remained stable throughout the 1960s, while interest in developing the railway for tourists declined and local politicians stated that a road was needed to attract tourists to Aurland. The power station was upgraded to 14,000 kilowatts (19,000 hp) in 1969. In 1969, ridership increased by 10 percent and by 12 percent

5490-569: The traffic levers would not be able to be changed until the track section was clear of trains. Both APB and manual traffic control would still require train orders in certain situations, and both required trade-offs between human operators and granularity of routing control. The ultimate solution to the costly and imprecise train order system was developed by the General Railway Signal company as their trademarked "Centralized Traffic Control" technology. Its first installation in 1927

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5580-472: The traffic was at its lowest. NSB ordered three El 9 locomotives from Thune on 4 October 1940. The units were delivered in 1942, with the electrical components from NEBB and the transformers and controllers from Per Kure . A delay was caused by bombing of Per Kure by the resistance . The locomotives were custom-built for the steep gradients on the Flåm and Hardanger Lines, and were delivered with an axle load of 12 tonnes (12 long tons; 13 short tons) and

5670-404: The train's movements by displaying signals and controlling switches. It was also designed to enhance safety by reporting any track occupancy ( see track circuit ) to a human operator and automatically preventing trains from entering a track against the established flow of traffic. What made CTC machines different from standard interlocking machines and ABS was that the vital interlocking hardware

5760-404: The trains to move out of the way. Initially, the only two ways for trains to arrange such interactions was to somehow arrange it in advance or provide a communications link between the authority for train movements (the dispatcher) and the trains themselves. These two mechanisms for control would be formalized by American railroad companies in a set of procedures called train order operation , which

5850-459: The waterfall Kjosfossen . The line then runs through the 1,341.5-meter-long (4,401 ft) Nåli Tunnel, the longest on the line. At the end of the tunnel lies Kårdal Station , traditionally serving the farm furthest up in the valley. The station is 6.34 kilometers (3.94 mi) from Myrdal and 557 meters (1,827 ft) AMSL. On the other side of the valley is Trodlatoppen, the site of several avalanches every year. The line then runs through

5940-578: Was 5.5 percent (1:18). In 1915, the first proposal was launched for using a bus service as an alternative to the train. This was rejected because buses were not able to give the comfort and reliability of a train. The idea was proposed again in 1922 by the director of the Norwegian Public Roads Administration . Among the strongest opponents to the bus alternative was Ingolf Elster Christensen , County Governor of Sogn og Fjordane and later parliamentarian, who stated that

6030-482: Was 65 minutes downhill and 80 minutes uphill. The official name of the line was decided by the ministry on 26 June 1941. From 1 May 1942, Rolf Aksnes took over as head engineer after Kielland. During construction of the Bergen Line in 1898, the upper part of Kjosfossen had been built up with a hydroelectric power station. Another power station was built there, and taken into use on 27 October 1944. Built by Kværner and Norsk Elektrisk & Brown Boveri (NEBB), it had

6120-504: Was a landslide at Høga, covering the area planned for the railway. The area was made of phyllite and was the geologically most unstable area on the route. The initial response was to plan for a tunnel past the area, but this was quickly rejected because of the high price. Instead, the line was moved further away from the mountain side. Other slides during construction included an avalanche near Store Reppa on 10 February 1925, which deposited up to 3.5 meters (11 ft) of earth. In April 1925,

6210-399: Was accelerated by increasing the number of workers from 58 to 195. Regular freight operation on the Flåm Line started on 1 August 1940, albeit limited to an axle load of 12 tonnes (12 long tons; 13 short tons). At the time there were four trains each day, two in each direction. Passenger trains started running on 10 February 1941, also with two trains in each direction per day. Travel time

6300-532: Was also sent via the line. From 1977, most of the post was instead sent by truck via Gol , and only post from Aurland went via the railway. Other products sent by the line were milk to the dairy in Voss, which terminated in 1983, as well as fruit. Partial loads saw a large increase during the 1960s, after NSB and the ferry operator Fylkesbaatane i Sogn og Fjordane teamed up to send packages via Flåm to Oslo and Bergen. Flåm had several arrivals until 1973, when Linjegods

6390-542: Was also taken into use after a similar rebuild. El 9 remained in sporadic use until 1989. Class 69 electric multiple units were taken into use starting on 10 August 1982. These had been allocated to Bergen District for use on the Bergen Commuter Rail , and were also used on the direct trains between Bergen and Flåm. The main disadvantage with the class was the small windows, as the trains were designed for commuter traffic rather than sight-seeing. In 1990,

6480-499: Was because there was agreement on a national railway plan, and removing parts of it would disrupt the geographical compromise. However, Parliament did vote to reduce the number of intermediate stations to one, which would allow trains to meet at Berekvam. The cost saving for a road was estimated at 30 percent. The issue of a road was taken up in a new vote in Parliament in 1927, but was again rejected. The administration office for

6570-857: Was commissioned in September 1957 on the Glen Waverley line in suburban Melbourne . 6 miles (9.7 km) in length, it was installed by the Victorian Railways as a prototype for the North East standard project . In June 1959, the Western Australian Government Railways completed installation of Australia's first large-scale application of CTC, on the 3 ft 6 in ( 1,067 mm ) South Western Railway , which links Perth with Bunbury . Upon its completion, that CTC system covered

6660-468: Was concerned that the proposal's light rolling stock would not be sufficient to operate through snow during the winter. Estimated traffic for the Flåm Line was 22,000 annual passengers. As both the other alternatives were discarded, consensus gradually grew for the Flåm alternative, and the Railway Committee for Nordre Bergenhus County recommended this proposal. New plans from NSB criticized

6750-418: Was considered optimal: El 11 allowed the train weight to increase to 100 tonnes (98 long tons; 110 short tons), but the train had the steps for the voltage regulator and the commutation set for too high speeds. El 13 had rheostatic brakes , which were not suitable for the gradient; the locomotives were also better suited for mainline service and would therefore not be prioritized for branch lines. In 1972,

6840-401: Was director of Bergen Public Road Administration. In 1925, following the appointment of Mowinckel's First Cabinet , it was proposed that the railway be built as a road, and the tracks laid later. One of NSB's board members proposed instead building a suspended railway . The plans to cancel the railway were stopped because of parliamentarian support for the railway. Part of the political support

6930-452: Was established in 1995. Originally located in an annex of Fretheim Hotel, it moved in 1999 to the old station building at Flåm. In March 1997, NSB announced that they had plans to privatize the operations of the line from 1998. The responsibility for setting the schedule, selling tickets and marketing was transferred to Flåm Utvikling, a newly established company that NSB owned 49 percent of, and Aurland Ressursutvikling 51 percent. The latter

7020-421: Was established. Following a reorganization, the number of calls was reduced to once per week. Freight volume fell further during the 1980s; an attempt in 1978 to force the three major distributors Linjegods, Firda Billag and Sogn Billag to route traffic via the Flåm Line failed. During the 1970s, NSB started the process of finding a replacement for the El 9. New locomotives would cost NOK 20 million, and

7110-629: Was installed between Upper Hutt and Featherston in 1955 and between St Leonards and Oamaru in stages from 1955 to 1959. CTC was completed between Hamilton and Paekākāriki on the NIMT on 12 December 1966. On the Main South Line CTC was installed from Rolleston to Pukeuri north of Oamaru on the Main South Line in stages from 1969 to completion in February 1980. The older CTC installation from St Leonards to Oamaru

7200-415: Was introduced on 25 November 1944. To begin with, Class 64 railcars were used. NSB had originally planned to use electric multiple units , but changed the plans during the war and instead decided to use locomotives and cars. The Class 64 trains remained in service on the Flåm Line until May 1947. They were normally used on the Hardanger Line, but were regularly taken back into use on the Flåm Line when

7290-446: Was later partly automated through use of Automatic Block Signals (ABS). The starting point of each system was the railroad timetable that would form the advanced routing plan for train movements. Trains following the timetable would know when to take sidings, switch tracks and which route to take at junctions. However, if train movements did not go as planned, the timetable would then fail to represent reality, and attempting to follow

7380-412: Was located at the remote location and the CTC machine only displayed track state and sent commands to the remote locations. A command to display a signal would require the remote interlocking to set the flow of traffic and check for a clear route through the interlocking. If a command could not be carried out due to the interlocking logic, the display would not change on the CTC machine. This system provided

7470-463: Was necessary on the Flåm Line. From 1949 there were two locomotives on the Flåm Line and from 1955 all three were used there. Five passenger cars in aluminum were delivered by Strømmens Værksted . The cost of the three locomotives and five cars was NOK 2.4 million. The railway quickly saw an increase in traffic, with an average 11 percent annual increase from the opening until the mid-1950s. In part to allow access to Kjosfossen, Kjosfossen Station

7560-485: Was on a 40-mile stretch of the New York Central Railroad between Stanley, Toledo and Berwick, Ohio , with the CTC control machine located at Fostoria, Ohio . CTC was designed to enable the train dispatcher to control train movements directly, bypassing local operators and eliminating written train orders. Instead, the train dispatcher could directly see the trains' locations and efficiently control

7650-441: Was opened in 1951. By then, ridership had stabilized at 115,000 people per year. A significant portion of the traffic consisted of tourists, in part from cruise ships docked in Flåm. In the latter half of the decade, NSB launched the Norway in a Nutshell package, which included a ride on the Flåm Line. A sleeping car was introduced on the night train between Flåm and Oslo in 1958. It made three trips in each direction per week during

7740-579: Was owned by Aurland Municipality , the Industrial Development Corporation of Norway and Aurland Sparebank , a local bank. Flåm Utvikling also took over responsibility for other tourism-related activities in Flåm, such as port facilities. NSB would still operate the trains, and Flåm Utvikling would pay NSB the cost of running the trains, but keep the profits from the ticket sales. The Norwegian National Rail Administration , which had been established in 1996 and had taken over

7830-399: Was proposed: a 47.13-kilometer (29.29 mi) long adhesion line from Voss to Gudvangen via Stalheim . It was estimated to cost NOK 3.5 million, but was considered by local politicians to be inferior to the Flåm alternative. A third alternative was a combined tramway and funicular , which would be built between Myrdal and Fretheim . It was estimated to cost NOK 800,000, but NSB

7920-587: Was replaced in stages with Track Warrant Control in 1991 and 1992. The most recent installations of CTC were completed in August 2013 on the MNPL from Marton to Aramoho and from Dunedin to Mosgiel and on the Taieri Gorge Line as far as North Taieri in late 2015. CTC-controlled track is significantly more expensive to build than non-signalled track, due to the electronics and failsafes required. CTC

8010-494: Was supplemented with train orders, which superseded the instructions in the timetable. From the 1850s until the middle of the twentieth century, train orders were telegraphed in Morse code by a dispatcher to a local station , where the orders would be written down on standardized forms and a copy provided to the train crew when they passed that station, directing them to take certain actions at various points ahead: for example, take

8100-508: Was then estimated to cost NOK 14.5 million—the increase caused by inflation during the First World War—;of which NOK 1.2 million was to be paid by the local governments. The line was to have tracks which weighed 25 kilograms per meter (50 lb/yd). The curve radius was set to minimum 150 meters (490 ft), although exceptionally 125 meters (410 ft) was permitted. The steepest permitted gradient

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