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Slow Order
A slow order is a local speed restriction on a rail line that is set below the track's normal speed limit. Slow orders are usually imposed by railway dispatchers for sections of track that are in some way deficient or when there is a requirement to perform maintenance on a section of railway. Slow orders are employed whenever continuous welded rail has some sort of derail or danger condition, such as an open critical joint, joints close to a bridge or movable bridge, or issues with settling ballast. Sometimes, slow orders are imposed because of rail geometry defects or snow accumulations. When maintenance workers wish to work under dispatcher protection without a designated "window" of time where no trains are allowed to run, they typically post flags at either end of the section on which they will be working, and a slow order is posted on the track. Since slow orders tend to disrupt timetables and can affect time-sensitive shipments, railroads try to get them cleared as soon a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rail Transport
Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a prepared flat surface, rail vehicles ( rolling stock) are directionally guided by the tracks on which they run. Tracks usually consist of steel rails, installed on sleepers (ties) set in ballast, on which the rolling stock, usually fitted with metal wheels, moves. Other variations are also possible, such as "slab track", in which the rails are fastened to a concrete foundation resting on a prepared subsurface. Rolling stock in a rail transport system generally encounters lower frictional resistance than rubber-tyred road vehicles, so passenger and freight cars (carriages and wagons) can be coupled into longer trains. The operation is carried out by a railway company, providing transport between train stations or freight customer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuous Welded Rail
A railway track (British English and UIC terminology) or railroad track (American English), also known as permanent way or simply track, is the structure on a railway or railroad consisting of the rails, fasteners, railroad ties (sleepers, British English) and ballast (or slab track), plus the underlying subgrade. It enables trains to move by providing a dependable surface for their wheels to roll upon. Early tracks were constructed with wooden or cast iron rails, and wooden or stone sleepers; since the 1870s, rails have almost universally been made from steel. Historical development The first railway in Britain was the Wollaton Wagonway, built in 1603 between Wollaton and Strelley in Nottinghamshire. It used wooden rails and was the first of around 50 wooden-railed tramways built over the next 164 years. These early wooden tramways typically used rails of oak or beech, attached to wooden sleepers with iron or wooden nails. Gravel or small stones were packed around the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derail
A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended rolling stock. The device works by derailing the equipment as it rolls over or through it. Although accidental derailment is damaging to equipment and track, and requires considerable time and expense to remedy, derails are used in situations where there is a risk of greater damage to equipment, injury or death if equipment is allowed to proceed past the derail point. Applications Derails may be applied: *where sidings meet main lines or other through tracks *at junctions or other crossings to protect the interlocking against unauthorized movement *temporarily at an area where crews are working on a rail line *approaching a drawbridge, dead end, or similar hazard. Design There are four basic forms of derail. Wedge The most common form is a wedge- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Track Geometry
Track geometry is concerned with the properties and relations of points, lines, curves, and surfaces in the three-dimensional positioning of railroad track. The term is also applied to measurements used in design, construction and maintenance of track. Track geometry involves standards, speed limits and other regulations in the areas of track gauge, alignment, elevation, curvature and track surface. Standards are usually separately expressed for horizontal and vertical layouts although track geometry is three-dimensional. Layout Horizontal layout Horizontal layout is the track layout on the horizontal plane. This can be thought of as the plan view which is a view of a 3-dimensional track from the position above the track. In track geometry, the horizontal layout involves the layout of three main track types: tangent track (straight line), curved track, and track transition curve (also called transition spiral or spiral) which connects between a tangent and a curved track. Curved ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dispatcher
A dispatcher is a communications worker who receives and transmits information to coordinate operations of other personnel and vehicles carrying out a service. A number of organizations, including police and fire departments, emergency medical services, motorcycle couriers, taxicab providers, trucking companies, railroads, and public utility companies, use dispatchers to relay information, direct personnel, and coordinate their operations. Types of dispatchers Emergency dispatchers An emergency dispatcher, also known as public safety dispatcher, 9-1-1 dispatcher, or public safety telecommunicator www.bls.gov ''Occupational Employment and Wages May 2020''. URL accessed on August 19, 2021 receives calls from individuals who require emergency ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Transport Timetable
A public transport timetable (also timetable and North American English schedule) is a document setting out information on public transport service times, to assist passengers with planning a trip. Typically, the timetable will list the times when a service is scheduled to arrive at and depart from specified locations. It may show all movements at a particular location or all movements on a particular route or for a particular stop. Traditionally this information was provided in printed form, for example as a leaflet or poster. It is now also often available in a variety of electronic formats. In the 2000s public transport route planners / intermodal journey planners have proliferated and offer traveller the convenience that the computer program looks at all timetables so the traveller doesn't need to. A "timetable" may also refer to the same information in abstract form, not specifically published, e.g. "A new timetable has been introduced". History The first compilation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railroads
Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in Track (rail transport), tracks. In contrast to road transport, where the vehicles run on a prepared flat surface, rail vehicles (rolling stock) are directionally guided by the tracks on which they run. Tracks usually consist of steel rails, installed on Railroad tie, sleepers (ties) set in track ballast, ballast, on which the rolling stock, usually fitted with metal wheels, moves. Other variations are also possible, such as "slab track", in which the rails are fastened to a concrete foundation resting on a prepared subsurface. Rolling stock in a rail transport system generally encounters lower friction, frictional resistance than rubber-tyred road vehicles, so passenger and freight cars (carriages and wagons) can be coupled into longer trains. The rail transport operations, operation is carried out by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slow Order Signal Board Croatia
In everyday use and in kinematics, the speed (commonly referred to as ''v'') of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero. Speed is not the same as velocity. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph). For air and marine travel, the knot is commonly used. The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum ''c'' = metres per second (app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Croatian Railways
Croatian Railways ( hr, Hrvatske željeznice; abbreviated as HŽ) is the national railway company of Croatia. Croatia is a member of the International Union of Railways (UIC). The UIC Country Code for Croatia is 78. The Croatian rail network carried 20.270 million passengers in 2018. Railway network , the Croatian railway system consists of 2,617 km of rails (of which 275 km is double track). 970 km of track (37.1% of the network) is electrified. There are several major railway routes in the country: * (via Ljubljana, Slovenia) from Dobova via Zagreb, Slavonski Brod and Vinkovci to Tovarnik (and onwards to Belgrade, Serbia), with a connection in Strizivojna–Vrpolje towards Osijek * from Zagreb to Koprivnica * from Zagreb to Oštarije and Rijeka * from Oštarije to Split * from Zagreb to Sisak * from Zagreb to Varaždin There are other routes to Slovenia, Hungary, Bosnia and Herzegovina and Serbia, as well as regular overnight trains to Austria (namely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coast Line (Union Pacific Railroad)
The Coast Line is a railroad line between Burbank, California and the San Francisco Bay Area, roughly along the Pacific Coast. It is the shortest rail route between Los Angeles and the Bay Area. History Predecessors The San Francisco and San Jose Railroad built the first segment of the line from San Francisco to San Jose between 1860 and 1864. The founders of the SF&SJ incorporated as the Southern Pacific Railroad, which was authorized by Congress in 1866 to connect the line from San Jose south to Needles, where it would meet the Atlantic & Pacific Railroad. However, SP had built to Tres Pinos by 1873 and abandoned efforts to continue the line to Coalinga, instead choosing a route from Lathrop. By 1871, SP had completed a line south from San Jose through Gilroy and Pajaro, arriving at Salinas in 1872 and Soledad in 1873. SP halted southward work at Soledad for thirteen years and started building north from Los Angeles in 1873, completing a line to Burbank. In 1886, SP ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camarillo, California
Camarillo ( ) is a city in Ventura County in the U.S. state of California. As of the 2020 United States Census, the population was 70,741, an increase of 5,540 from the 65,201 counted in the 2010 Census. Camarillo is named for brothers Juan and Adolfo Camarillo, prominent Californios who owned Rancho Calleguas and founded the city. The city is home to California State University, Channel Islands, housed on the former grounds of the Camarillo State Hospital. History At the time of European contact in the 18th century, Camarillo had been inhabited by the Chumash Indians for thousands of years. Present day Camarillo and the larger Oxnard Plain were portions of a paramount Chumash capital at the village of Muwu (today's Point Mugu). Simo'mo (CA-VEN-24), which translates to "the saltbush patch", was a Chumash village located upstream from Mugu Lagoon near the city of Camarillo. Caves with ancient pictographs are located in the area around Conejo Grade including a site used for reli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Luis Obispo
San Luis Obispo (; Spanish for " St. Louis the Bishop", ; Chumash: ''tiłhini'') is a city and county seat of San Luis Obispo County, in the U.S. state of California. Located on the Central Coast of California, San Luis Obispo is roughly halfway between the San Francisco Bay Area in the north and Greater Los Angeles in the south. The population was 47,063 at the 2020 census. San Luis Obispo was founded by the Spanish in 1772, when Saint Junípero Serra established Mission San Luis Obispo de Tolosa. The town grew steadily through the Mexican period before a rapid expansion of San Luis Obispo following the American Conquest of California. San Luis Obispo is a popular tourist destination, known for its historic architecture, vineyards, and hospitality, as well as for being home to California Polytechnic State University, San Luis Obispo. History The earliest human inhabitants of the local area were the Chumash people. One of the earliest villages lies south of San Luis Obispo an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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