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60-431: Delhi–Alwar Regional Rapid Transit System (Delhi–Alwar RRTS) is a 164 km long under-construction semi-high speed rail corridor connecting Delhi , Gurgaon , Rewari and Alwar . It is one of the three RapidX corridors planned under Phase-1 of the Rapid Rail Transport System of the National Capital Region Transport Corporation (NCRTC). With maximum speed of 160 km/h and average speed of 105 km/h,

120-558: A Semi-High Speed Train. In 2021, Indian Railways started to upgrade Rajdhani Coaches to Tejas coaches. This replaced its traditional LHB Rajdhani coaches On 15 February 2021, the Agartala Rajdhani Express was upgraded with Tejas livery Sleeper Coaches. On 19 July 2021, the Mumbai Rajdhani Express was upgraded to Tejas class smart coaches. LHB Rajdhani coaches. On 1 September 2021

180-410: A change to the signalling system to account for increased braking distance. Prior to the project, the system comprised a mixture of equipment from pre- WWI mechanical signalling to the remote control systems of the 1980s. In some cases, operators needed to telephone the local operators to manually control the signal boxes. With the new speeds, the signalling needed to be computerized. The project employed

240-708: A class of railcars built by United Goninan , Broadmeadow for Transwa in 2004–05 to replace the WAGR WCA/WCE class railcars on the AvonLink and Prospector services in Australia . They are capable of high-speed operation. In China, higher-speed railways are railways that are not officially categorized as high-speed rail but allow CRH EMUs run on it with speeds up to 200 km/h. Typically these lines are classified as Grade I conventional railways and are used by both passenger and freight services. Note that

300-548: A muted whistle and a missing light bulb. In response to the 2008 Chatsworth train collision in California, a federal law required that positive train control (PTC) be implemented nationwide by 2015. After several extensions, the Federal Railroad Administration (FRA) announced on December 29, 2020, that PTC was operating on all required freight and passenger rail routes. While PTC’s main purpose

360-581: A smoother ride at higher speeds, the lengths of rail may be welded together to form continuous welded rail (CWR). However, the continuous welded rails are vulnerable to stress due to changes in temperature. In Australia, the track condition before the Regional Fast Rail project could only support trains up to speeds of 130 km/h (80 mph). The tracks are with mixture of wooden and concrete ties. The rail weight varies but with majority being 47 kg/m (95 lb/yd). The track upgrade in

420-402: A suitably maintained track, maximum track speed through curves is limited by the " centrifugal force " which acts to overturn the train. To compensate for this force, the track is superelevated (the outer rail is raised higher than the inner rail). The speed at which the centrifugal force is perfectly offset by the tilt of the track is known as the balancing speed. Maximum speed can be found using

480-611: A top speed of 110 mph (175 km/h). In 1999, the concept of Regional Fast Rail project was initiated by the Government of Victoria with a goal to provide express higher-speed rail services between four main regional centres of Victoria ( Geelong , Ballarat , Bendigo and the Latrobe Valley ) and Melbourne . The initiative included a key component to upgrade rail infrastructure to have top speeds up to 160 km/h (100 mph). The development phase of initiative

540-459: A train is much higher than the limits set by the speed formula, which is largely in place for passenger comfort. There is no hard maximum unbalanced superelevation for European railways, some of which have curves with over 11 inches (280 mm) of unbalanced superelevation to permit high-speed transportation. The allowed unbalanced superelevation will cause trains to run with normal flange contact. The points of wheel-rail contact are influenced by

600-462: Is median separators which are installed along the center line of roadways, extending approximately 70 to 100 feet from the crossing, to discourage drivers from running around the crossing gates. More active devices include the four-quadrant gate , which blocks both sides of each traffic lane. Longer gate arms can cover 3/4 of the roadway. Video cameras can also be installed to catch the violators. A signal monitoring system can also be installed to alert

660-486: Is India's first train operated by private operators, IRCTC , a subsidiary of Indian Railways . The Ahmedabad – Mumbai Tejas express, also operated by IRCTC was inaugurated on the 17 January 2020. From 1 September 2021, the train LHB Rajdhani Rakes are replaced with LHB Tejas Sleeper Rakes. This increased the speed of the train to 130 km/h. The train can travel at a top speed of 160 km/h making it

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720-675: Is a semi high-speed rail project inaugurated in 2023. Trains, called Namo Bharat trains , can reach speeds of up to 180 kilometers per hour. Rail speed limits in the United States#Track classes Federal regulators set train speed limits based on the signaling systems in use. Passenger trains were limited to 59 mph (95 km/h) and freight trains to 49 mph (79 km/h) on tracks without block signals, known as " dark territory ." Trains without an automatic cab signal, train stop, or train control system were not allowed to exceed 79 mph (127 km/h). This rule, issued in 1947 and effective by

780-438: Is an example of deliberately reduced speeds). Identifiers starting with S indicates metropolitan services using CRH rolling stock and have a different fare system to the national one. Their maximum speed is 160 km/h. Note: The start and end station in the following lists accounts only CRH services. * denotes some section of this line doesn't have 160 km/h CRH services. (including Second track ) This section lists

840-860: Is based on the British Rail designed High Speed Train and entered service in April 1982. It came to fruition in January 1978 when the Public Transport Commission invited tenders for 25 high-speed railcars similar to the Prospector railcars delivered by Comeng to the Western Australian Government Railways in 1971. Comeng's proposal for a train based on the InterCity 125 was announced as

900-566: Is compatible with higher-speed rail operation. They are both transponder -based and GPS -based PTC systems currently in use in the United States. By a mandate, a significant portion of the railroads in the United States will be covered by PTC by the end of 2015. To support trains that run regularly at higher speeds, the rails need to be reliable. Most freight tracks have wooden ties which cause rails to become slightly misaligned over time due to wood rot, splitting and spike -pull (where

960-459: Is often lower on routes with slow heavy freight trains in order to reduce wear on the inner rail. Allowed unbalanced superelevation in the U.S. is restricted to 3 inches (76 mm), though 6 inches (152 mm) is permissible by waiver. Tilting trains like the Acela operate with even higher unbalanced superelevation, by dynamically shifting the weight of the train. The actual overturning speed of

1020-409: Is the jargon used to describe inter-city passenger rail services that have top speeds of more than conventional rail but are not high enough to be called high-speed rail services. The term is also used by planners to identify the incremental rail improvements to increase train speeds and reduce travel time as alternatives to larger efforts to create or expand the high-speed rail networks. Though

1080-400: Is the safety of grade crossings (also known as level crossings , flat level crossings , non- grade-separated crossings) which limits how fast trains can go. FRA regulations set speed limits for tracks with grade crossings as follows: Level crossings are generally the most dangerous part of the railway network with a large number of fatal incidents occurring at a grade crossing. In Europe,

1140-550: Is to prevent collisions, it also allows higher speeds in some cases. Different PTC systems are used in various regions across the country. In the United States , the Federal Railroad Administration has developed a system of classification for track quality. The class of a section of track determines the maximum possible running speed limits and the ability to run passenger trains. Assuming

1200-524: The Rajendra Nagar Patna Rajdhani Express was upgraded to Tejas rakes. This increased the speed of the train to 130 km/h. The train can travel at a top speed of 160 km/h. In 2019, Vande Bharat Express , also known as Train 18 , was inaugurated. This is an Indian higher-speed rail intercity electric multiple unit . It was designed and built by Integral Coach Factory (ICF) at Perambur , Chennai under

1260-573: The Solid State Interlocking with the newly laid fiber-optic communication between the components to use three computer systems to control the signals. When the output of one computer differs from the other two, the system will fail that computer and continue the signal operations as long as the outputs from the other two computers are consistent. The project deployed the Train Protection & Warning System which allows

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1320-564: The definitions of high-speed rail , the definition varies by country. The term has been used by government agencies, government officials, transportation planners, academia, the rail industry, and the media, but sometimes with overlaps in the speed definitions. Some countries with an established definition of higher-speed rail include: In Canada, the assumption about grade crossing is that operating higher-speed rail services between 160 and 200 km/h (99 and 124 mph) would require "improved levels of protection in acceptable areas". In

1380-424: The tire profile of the wheels. Allowance has to be made for the different speeds of trains. Slower trains will tend to make flange contact with the inner rail on curves, while faster trains will tend to ride outwards and make contact with the outer rail. Either contact causes wear and tear and may lead to derailment if speeds and superelevation are not within the permitted limits. Many high-speed lines do not permit

1440-678: The FRA establishes classification of track quality which regulates the speed limits of trains with Class 5, Class 6, Class 7 and Class 8 for top speeds of 90 mph (145 km/h), 110 mph (175 km/h), 125 mph (200 km/h) and 160 mph (255 km/h), respectively. The FRA also regulates passenger train design and safety standards to ensure trains that operate at speeds of 80 mph (130 km/h) up to 125 mph (200 km/h) comply with its Tier I standard and trains that operate at speeds up to 150 mph (240 km/h) comply with its Tier II standard. Another limitation

1500-540: The FRA limits train speeds to 110 mph (175 km/h) without an "impenetrable barrier" at each crossing. Even with that top speed, the grade crossings must have adequate means to prevent collisions. Another option is grade separation , but it could be cost-prohibitive and the planners may opt for at-grade crossing improvements instead. The safety improvements at crossings can be done using combination of techniques. This includes passive devices such as upgraded signage and pavement markings. Another low-cost passive device

1560-525: The Indian government's Make in India initiative over a span of 18 months. The unit cost of the first rake was given as ₹ 1 billion (US$ 12 million), though the unit cost is expected to go down with subsequent production. At the original price, it is estimated to be 40% cheaper than a similar train imported from Europe. The train was launched on 15 February 2019, from Delhi to Varanasi . The service

1620-538: The United States, railroad tracks are largely used for freight with at-grade crossings . Passenger trains in many corridors run on shared tracks with freight trains . Most trains are limited to top speeds of 79 mph (127 km/h) unless they are equipped with an automatic cab signal , automatic train stop , automatic train control or positive train control system approved by the Federal Railroad Administration (FRA). In developing higher-speed rail services, one of those safety systems must be used. Additionally,

1680-780: The above limitations, many regional transportation planners focus on rail improvements to have the top speeds up to 110 mph (175 km/h) when proposing a new higher-speed rail service. In countries where there had been rail improvement projects in the later part of the 20th century and into the 2000s, there are inter-city rail services with comparable speed ranges of higher-speed rail, but they are not specifically called "higher-speed rail". Below are some examples of such services that are still in operation. Some commuter rail services that cover shorter distances may achieve similar speeds but they are not typically called as higher-speed rail. Some examples are: There are many types of trains that can support higher-speed rail operation. Usually,

1740-469: The construction work that could potentially disrupt the train services. The followings are some strategies used by regional transportation planners and rail track owners for their rail improvement projects in order to start the higher-speed rail services. In Victoria , Australia, the increased top speeds from 130 to 160 km/h (80 to 100 mph) in the Regional Fast Rail project required

1800-484: The crews when the crossing equipment has malfunctioned. In Norway, grade crossing speed are not permitted to exceed 160 km/h (100 mph). In areas where there is frequent interference between freight and passenger trains due to congestion which causes the passenger trains to slow down, more extensive improvements may be needed. Certain segments of the line in congested areas may need to be rerouted. New track may need to be laid to avoid many curves which slow down

1860-617: The definition of higher-speed rail varies from country to country, most countries refer to rail services operating at speeds up to 200 km/h (125 mph). The concept is usually viewed as stemming from efforts to upgrade a legacy railway line to high speed railway standards (speeds in excess of 250 km/h or 155 mph), but usually falling short on the intended speeds. The faster speeds are achieved through various means including new rolling stock such as tilting trains, upgrades to tracks including shallower curves, electrification, in-cab signalling, and less frequent halts/stops. As with

Delhi–Alwar Regional Rapid Transit System - Misplaced Pages Continue

1920-493: The deliberately reduced scenarios mentioned in "train identifiers" section above. Since 1997, ongoing construction to upgrade and built higher-speed lines capable of speeds of up to 200 km/h (120 mph) is conducted. The P.A.Th.E. Plan ( Patras - Athens - Thessaloniki - Evzonoi ), as it is called aims at reduced journey times between Greece's main cities (Athens, Thessaloniki and Patra) as well as an improved rail connection between Greece and North Macedonia . Currently, only

1980-549: The diesel-electric counterpart. The fuel consumption, locomotive maintenance costs and track wear of all all-electric locomotives are also lower. Furthermore, electric traction makes the operator more independent of oil price fluctuations and imports, as electricity can be generated from domestic resources or renewable energy. This was a major consideration in the electrification of the German Democratic Republic network , as lignite (and therefore electricity)

2040-478: The distance between Delhi and Alwar will be covered in 104 minutes. The project is expected to cost ₹ 37,000 crores. The National Capital Region Planning Board (NCRPB) as part of its Integrated Transportation Plan 2032 identified eight rail based rapid transit corridors to improve the efficacy of transportation system in the NCR. These were: Of these Delhi-Alwar, Delhi-Panipat and Delhi-Meerut are to be constructed in

2100-517: The end of 1951, was a response to a serious 1946 crash in Naperville, Illinois , involving two trains. Following a 1987 train collision in Maryland, freight trains in high-speed areas were required to have speed limiters that could forcibly slow trains, rather than just alerting the operator through in-cab signals. In the Maryland crash, the signal panel had been partially disabled, including

2160-508: The first phase. The Urban Mass Transit Company was given the job of conducting a feasibility study on 23 March 2010. The study thus submitted was approved by the Planning Board in 2012. The contract was then transferred to NCRTC on 18 January 2017 to carry the study forward. On 15 June 2018, the 100 km long first phase of the project from Hazrat Nizamuddin to Shahjahanpur-Neemrana-Behror, at an estimated cost of ₹ 25,000 crore,

2220-405: The following formula, which provides an allowance for trains to operate above the balancing speed: where: Normally, passenger trains run above the balancing speed, and the difference between the balancing superelevation for the speed and curvature and the actual superelevation on the curve is known as unbalanced superelevation. Track superelevation is usually limited to 6 inches (150 mm), and

2280-454: The higher superelevation, will require track modification to have transition spirals to and from those curves to be longer. Old turnouts may need replacement to allow trains to run through the turnouts at higher speeds. In the United States, some old turnouts have speed limit of 20 mph (30 km/h). Even with newer turnouts (rated #20), the diverging speed limit is still at 45 mph (70 km/h) which would significantly slow down

2340-425: The higher-speed train passing through those sections. High-speed turnouts (rated #32.7) are capable of handling maximum diverging speeds of 80 mph (130 km/h). In order to minimize the downtime to upgrade tracks, a track renewal train (TRT) can automate much of the process, replacing rails, ties, and ballast at the rate of 2 miles per day. In the United States, a TRT is used by Union Pacific Railroad on

2400-435: The length of track. When straight routes are not possible, reducing the number of curves and lowering the degree of curvature would result in higher achievable speeds on those curves. An example is the elimination of three consecutive reverse curves in favor of one larger curve. Raising superelevation may be considered for sharp curves which significantly limit speed. The higher speeds on those modified curves, together with

2460-417: The limit is often 160 km/h (100 mph) over grade crossings. In Sweden there is a special rule permitting 200 km/h (125 mph) if there are barriers and automatic detection of road vehicles standing on the track. In Russia 250 km/h (155 mph) is permitted over grade crossings. The United Kingdom has railway lines of 200 km/h (125 mph) which still use grade crossings. With

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2520-500: The majority of high-speed lines are also called "passenger-only"( Chinese : 客运专线 ) lines. Inside mainland China this word invokes a sense of higher-speed rail but the wording usage is inconsistent. Identifiers starting with G indicates at least part of the train's route operates at a maximum 300 km/h or above (this is a characteristic of the line rather than the precise maximum speed of this exact train) and not running at deliberately reduced speed on any section. Other sections of

2580-424: The modernized lines of Domokos – Thessaloniki , Athens Airport – Kiato , and Thessaloniki – Strymonas are in operation at maximum speeds of 160 km/h (99 mph). The Gatimaan Express was India's first semi-high speed train. In October 2014, the railways applied for safety certificate from Commission of Railway Safety to start the service. In June 2015, the train was officially announced. The train

2640-596: The power plants. Substations are required for each of the 40-mile (64 km) lengths to reduce severe voltage losses. There is also a need to consider the required amount of power supply and new power plants may be required. For locomotives, new electric locomotives are needed or existing diesel-electric locomotives can be retrofitted into all-electric locomotives, but it is a complicated task. These factors cause electrification to have high initial investment costs. The advantages of all-electric locomotives are that they provide quieter, cleaner and more reliable operations than

2700-434: The project included changing to use concrete ties and to use new standard of rail weight at 60 kg/m (121 lb/yd) in order to support the new top speeds of 160 km/h (100 mph). There may be restriction in maximum operating speeds due to track geometry of existing line, especially on curves. Straightening the route, where possible, will reduce the travel time by increasing the allowable speeds and by reducing

2760-432: The rail infrastructure needs to be upgraded prior to such operation. However, the requirements to the infrastructure (signalling systems, curve radii, etc.) greatly increase with higher speeds, so an upgrade to a higher-speed standard is often simpler and less expensive than building new high-speed lines. But an upgrade to existing track currently in use, with busy traffic in some segments, introduces challenges associated with

2820-557: The route may have lower speeds as low as 160 km/h. Identifiers starting with C indicates short-distance travel using CRH trains, the maximum speed is irrelevant (ranging from 160 km/h Ürümqi-Korla service to 350 km/h Beijing-Tianjin (via intercity) service). Identifiers starting with D indicates CRH services with maximum speed 265 km/h or less, including overnight sleepers on 310 km/h Beijing-Guangzhou line (running them 310 km/h overnight not only causes noises but also disturbs sleeping patterns of passengers. This

2880-406: The route, safety at all at-grade crossings needs to be considered. In Australia, the levels of upgrade of the crossing in the rail improvements project were based on the risk analysis. The improvements included flashing light protection, automatic full barriers protection, and pedestrian gates crossings. The project also introduced the use of rubber panels at the crossings. In the United States,

2940-407: The spike is gradually loosened from the tie). The concrete ties used to replace them are intended to make the track more stable, particularly with changes in temperature. Rail joints are also an issue, since most conventional rail lines use bolts and fishplates to join two sections of the rail together. This causes the joint to become slightly misaligned over time due to loosening bolts. To make for

3000-632: The successful bidder in October 1976. The Tilt Train is the name for two similar tilting train services, one electric and the other diesel , operated by Queensland Rail on the North Coast line from Brisbane to Rockhampton and Cairns . In May 1999 the Electric Tilt Train set an Australian train speed record of 210 km/h (130 mph) north of Bundaberg , a record that still stands. The Transwa WDA/WDB/WDC class are

3060-523: The system to automatically applies the brakes at a sufficient distance to stop the train if the driver does not control the speeds adequately. The project also incorporated Train Control and Monitoring System to allow real-time monitoring of the position of trains. In the United States, the first step to increase top speeds from 79 mph (127 km/h) is to install a new signal system that incorporates FRA-approved positive train control (PTC) system that

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3120-914: The third rail system is not generally used for higher-speed rail. One example in the United States that does involve electrification is the Keystone Improvement Project to provide higher-speed rail service along the Harrisburg - Pittsburgh segment of the Keystone Corridor in Pennsylvania . The plan includes additional track, a new signal system and electrification. If completed as planned, this would allow Amtrak to utilize electric power continuously on service from Philadelphia to Pittsburgh. The first segment ("Main Line") has already been using electric locomotives with

3180-504: The track shared with future higher-speed rail service in Illinois area. For electrified track, the old catenary may need to be replaced. The fixed-tension catenary which is acceptable for low speeds may not be suitable for regular higher-speed rail services, where a constant tension is automatically maintained when temperature changes cause the length of the wire to expand or contract. With trains running at higher speeds throughout

3240-455: The trains. In stretches of heavy freight train traffic, adding passing sidings along the segment should be considered. Sometimes certain stations may need to be bypassed. Another consideration is electrification . Electrifying a railway line entails a major upgrade to the rail infrastructure and equipment. On the infrastructure side, it requires catenary lines to be built above the tracks. New transmission lines are needed to carry power from

3300-603: Was approved by the Haryana government . Construction of Delhi-Alwar route with total 22 stations in will be completed in the following three construction phases and a pre-construction phase: There will be total 22 stations in total; 16 (11 elevated and 5 underground) will be built in the first phase and the rest in later phases. Sarai Kale Khan ISBT Semi-high speed rail Higher-speed rail ( HrSR ), also known as high-performance rail , higher-performance rail , semi-high-speed rail or almost-high-speed rail ,

3360-684: Was between 2000 and 2002. Finally, the services on four lines began between 2005 and 2006 with top speeds of 160 km/h using VLocity trains. Additionally, Queensland Rail 's Tilt Train , the Prospector and NSW TrainLink's XPT all have a top service speed of 160 km/h (99–100 mph). The New South Wales XPT (short for Express Passenger Train) is the main long-distance passenger train operated by NSW TrainLink on regional railway services in New South Wales , Australia from Sydney to Dubbo , Grafton , and Casino as well as interstate destinations, Brisbane and Melbourne . The XPT

3420-457: Was cheap and plentiful domestically whereas oil had to be imported at world market prices. An alternative to catenary lines is to use a third rail system which has a semi-continuous rigid conductor placed alongside or between the rails of a railway track. However the operating speeds of this type of systems cannot be greater than 100 mph (160 km/h) due to its limitation of the power supply gaps at turnouts and grade crossings. Therefore,

3480-525: Was launched on 5 April 2016 and completed its maiden journey between Nizamuddin and Agra Cantt within 100 minutes. But due to low occupancy, Indian Railways first extended this train from Agra to Gwalior on 19 February 2018 and then to Jhansi on 1 April 2018. The Tejas Express was Introduced by Indian Railways in 2017. It features modern onboard facilities with doors which are operated automatically. Tejas means "sharp", "lustre" and "brilliance" in many Indian languages. The inaugural run of Tejas Express

3540-534: Was named 'Vande Bharat Express' on 27 January 2019. On 5 October 2019, a second Vande Bharat Express was opened from Delhi to Katra On 30 September 2022, Prime Minister Narendra Modi inaugurated a 3rd Vande Bharat Express rake connecting Mumbai and Ahmedabad passing through Surat . This rake was an upgraded second generation version. an other second generation rake was inaugurated from Delhi to Una passing through Chandigarh . The Delhi Meerut Regional Rapid Transit System (RRTS), also known as RapidX ,

3600-422: Was on 24 May 2017 from Mumbai Chhatrapati Shivaji Maharaj Terminus to Karmali , Goa . It covered 552 km in 8 hours and 30 minutes. On 1 March 2019, second Tejas Express of the country was flagged off between Chennai Egmore and Madurai Junction by Prime Minister Narendra Modi . It covered 497 km in 6 hours and 30 minutes. Lucknow – New Delhi Tejas Express , which was inaugurated on 4 October 2019,

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