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Higher-speed Rail
Higher-speed rail (HrSR), also known as high-performance rail, higher-performance rail, semi-high-speed rail or almost-high-speed rail, is the jargon used to describe Inter-city rail, 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. Some countries use the term medium-speed rail, or semi-high speed rail instead. Though the definition of higher-speed rail varies from country to country, most countries refer to rail services operating at speeds up to . The concept is usually viewed as stemming from efforts to upgrade a legacy railway line to high speed railway standards (speeds in excess of ), but usually falling short on the intended speeds. The faster speeds are achieved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China Railway CR200J
The CR200J Fuxing ( zh, s=复兴号, p=Fùxīng Hào "Rejuvenation") is a Chinese higher-speed trainset consisting of a power car paired with unpowered passenger cars operated by China Railway. It is the slowest member of the Fuxing series. The train was jointly designed and produced by six companies under CRRC. These units are nicknamed ''Green EMUs'' or ''Hulk'' by the Chinese media due to its appearance. Design and development The development of CR200J is initiated by China Railway Corporation to create an affordable, economical, efficient higher-speed rail. The development started on 28 August 2015. First prototype started testing on 27 April 2017. Multiple trainset was sent to China Railway Chengdu Group for dynamic test on Chengdu–Chongqing railway, Chongqing–Lanzhou railway, and Chongqing–Guiyang high-speed railway between 17 December 2017 and 4 January 2018. There're multiple variants of CR200J series made by different subsidiaries of the state-owned China Rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Department Of Transportation
The California Department of Transportation (Caltrans) is an executive department of the U.S. state of California. The department is part of the cabinet-level California State Transportation Agency (CalSTA). Caltrans is headquartered in Sacramento. Caltrans manages the state's highway system, which includes the California Freeway and Expressway System, supports public transportation systems throughout the state and provides funding and oversight for three state-supported Amtrak intercity rail routes (''Capitol Corridor'', ''Pacific Surfliner'' and ''San Joaquins'') which are collectively branded as ''Amtrak California''. In 2015, Caltrans released a new mission statement: "Provide a safe, sustainable, integrated and efficient transportation system to enhance California’s economy and livability." History The earliest predecessor of Caltrans was the Bureau of Highways, which was created by the California Legislature and signed into law by Governor James Budd in 1895.Raymon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Level Crossing
A level crossing is an intersection where a railway line crosses a road, Trail, path, or (in rare situations) airport runway, at the same level, as opposed to the railway line crossing over or under using an Overpass#Railway, overpass or tunnel. The term also applies when a light rail line with separate Right-of-way (railroad), right-of-way or reserved track crosses a road in the same fashion. Other names include railway level crossing, railway crossing (chiefly international), grade crossing or railroad crossing (chiefly American), road through railroad, criss-cross, train crossing, and RXR (abbreviated). There are more than 100,000 level crossings in Europe and more than 200,000 in North America. History The history of level crossings depends on the location, but often early level crossings had a Flagman (rail), flagman in a nearby booth who would, on the approach of a train, wave a red flag or lantern to stop all traffic and clear the tracks. Gated crossings bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Speed Limits In The United States
Rail speed limits in the United States are regulated by the Federal Railroad Administration. Railroads also implement their own limits and enforce speed limits. Speed restrictions are based on a number of factors including curvature, signaling, track condition, and the presence of grade crossings. Like road speed limits in the United States, speed limits for tracks and trains are measured in miles per hour (mph). Signal speeds Federal regulators limit the speed of trains with respect to the signaling method used. Passenger trains are limited to 59 mph and freight trains to 49 mph on track without block signal systems. (''See'' dark territory.) Trains without "an automatic cab signal, automatic train stop or automatic train control system "may not exceed 79 mph." The order was issued in 1947 (effective 31 Dec 1951) by the Interstate Commerce Commission following a severe 1946 crash in Naperville, Illinois involving two Chicago, Burlington & Quincy Railroad t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Positive Train Control
Positive train control (PTC) is a family of automatic train protection systems deployed in the United States. Most of the United States' national rail network mileage has a form of PTC. These systems are generally designed to check that trains are moving safely and to stop them when they are not. A simplistic form of train traffic governance is ''negative'' train control, where trains must stop when issued a stop order and can move in the absence of such. An example of negative train control is Indusi. In contrast, ''positive'' train control restricts the train movement to an explicit allowance; movement is halted upon invalidation. A train operating under PTC receives a ''movement authority'' containing information about its location and where it is allowed to safely travel. As of 2019, the U.S. freight rail industry trade organization AAR claimed that the nation's largest freight railroads were operating PTC across 83.2 percent of the required route miles. The American Railwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Train Control
Automatic train control (ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emergency brake application if the driver does not react to a signal at danger. ATC systems tend to integrate various cab signalling technologies and they use more granular deceleration patterns in lieu of the rigid stops encountered with the older automatic train stop (ATS) technology. ATC can also be used with automatic train operation (ATO) and is usually considered to be the safety-critical part of a railway system. Over time, there have been many different safety systems labelled as "automatic train control". The first experimental apparatus was installed on the Henley branch line in January 1906 by the Great Western Railway, although it would now be referred to as an automatic warning system (AWS) because the driver retained full command of braking. The term is especially co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Automatic Train Stop
Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents. In some scenarios it functions as a type of dead man's switch. Automatic train stop differs from the concept of Automatic Train Control in that ATS usually does not feature an onboard speed control mechanism. Overview Mechanical systems The invention of the fail-safe railway air brake provided an external means for stopping a train via a physical object opening a valve on the brake line to the atmosphere. Eventually known as ''train stops'' or ''trip stops'', the first mechanical ATS system was installed in France in 1878 with some railroads in Russia following suit using a similar system in 1880. In 1901 Union Switch and Signal Company developed the first North American automatic train stop system for the Boston Elevated Railway. This system was so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cab Signalling
Cab signaling is a railway safety system that communicates track status and condition information to the cab, crew compartment or driver's compartment of a locomotive, railcar or multiple unit. The information is continually updated giving an easy to read display to the train driver or engine driver. The simplest systems display the trackside signal, while more sophisticated systems also display allowable speed, location of nearby trains, and dynamic information about the track ahead. Cab signals can also be part of a more comprehensive train protection system that can automatically apply the brakes stopping the train if the operator does not respond appropriately to a dangerous condition. Overview The main purpose of a signal system is to enforce a safe separation between trains and to stop or slow trains in advance of a restrictive situation. The cab signal system is an improvement over the wayside signal system, where visual signals beside or above the right-of-way gov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freight Rail Transport
Rail freight transport is the use of rail transport, railroads and trains to transport cargo as opposed to human passengers. A freight train, cargo train, or goods train is a group of Railroad car#Freight cars, freight cars (US) or goods wagons (International Union of Railways) hauled by one or more locomotives on a railway, transporting cargo all or some of the way between the shipper and the intended destination as part of the logistics, logistics chain. Trains may haul bulk material handling, bulk material, intermodal containers, general freight or specialized freight in purpose-designed cars. Rail freight practices and economics vary by country and region. When considered in terms of ton-miles or tonne-kilometers hauled per unit of energy consumed, rail transport Fuel efficiency in transportation#Trains, can be more efficient than other means of transportation. Maximum economies are typically realized with bulk commodities (e.g., coal), especially when hauled over long dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
At-grade Intersection
An intersection or an at-grade junction is a junction where two or more roads converge, diverge, meet or cross at the same height, as opposed to an interchange, which uses bridges or tunnels to separate different roads. Major intersections are often delineated by gores and may be classified by road segments, traffic controls and lane design. Types Road segments One way to classify intersections is by the number of road segments (arms) that are involved. * A three-way intersection is a junction between three road segments (arms): a T junction when two arms form one road, or a Y junction, the latter also known as a fork if approached from the stem of the Y. * A four-way intersection, or crossroads, usually involves a crossing over of two streets or roads. In areas where there are blocks and in some other cases, the crossing streets or roads are perpendicular to each other. However, two roads may cross at a different angle. In a few cases, the junction of two road segments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virginia Department Of Rail And Public Transportation
Virginia Department of Rail and Public Transportation (VDRPT) is an agency of the Commonwealth of Virginia in the United States. According to its web site, the state agency's mission is "to improve the mobility of people and goods while expanding transportation choices in the Commonwealth." The three primary areas of VDRPT activity are the state's railroads, public transportation, and commuter services. The Department of Rail and Public Transportation is a state agency reporting to the Virginia Secretary of Transportation and the Commonwealth Transportation Board. It was formerly a section within the Virginia Department of Transportation, (VDOT) (which continues to be responsible for most highways and related facilities such as ferry systems, bridges, tunnels, and two of the state's three bridge-tunnels). In 1992, the General Assembly established DRPT as a department. As a now-separate agency, VDRPT still works closely with VDOT, as well as other state transportation agenci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Department Of Transportation
The Texas Department of Transportation (TxDOT ) is a government agency in the American state of Texas. Though the public face of the agency is generally associated with the construction and maintenance of the state's immense state highway system, the agency is also responsible for overseeing aviation, rail, and public transportation systems in the state. At one time, TxDOT also administered vehicle registration; but this function transferred to the Texas Department of Motor Vehicles, a state agency which began operations in November 2009. The agency has been headquartered in the Dewitt C. Greer Building at 125 East 11th Street in Downtown Austin, Texas, since 1933. History The Texas Legislature created the Texas Highway Department in 1916 to administer federal highway construction and maintenance. In 1975, its responsibilities increased when the agency merged with the Texas Mass Transportation Commission, resulting in the formation of the State Department of Highways and Pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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