Search results
Results From The WOW.Com Content Network
Catch points and trap points are types of points which act as railway safety devices. Both work by guiding railway carriages and trucks from a dangerous route onto a separate, safer track. Catch points are used to derail vehicles which are out of control (known as runaways ) on steep slopes.
The train could then proceed, and a second train could follow. In the earliest days, the second train could proceed after a designated time interval, as on double lines at the time. However, after the Armagh rail disaster of 1889, block working became mandatory. Seeing the train staff provided assurance that there could be no head-on collision.
Rail transport terms are a form of technical terminology applied to railways. Although many terms are uniform across different nations and companies, they are by no means universal, with differences often originating from parallel development of rail transport systems in different parts of the world, and in the national origins of the engineers and managers who built the inaugural rail ...
Karachi Cantonment – Zero Point: 2007-2019 405UP/406DN Waris Shah Passenger PR: Lahore Junction – Shorkot Cantonment Junction: 1990 – Present 207UP/208DN Wazirabad Passenger PR Faisalabad - Wazirabad Junction: 235UP/236DN Zahedan Mixed Passenger: PR: Quetta – Zahedan: 1998 – 2008 - Zarghoon Express PR: Quetta – Jacobabad Junction ...
Pakistan Railways is working on plans to construct a 635 km standard-gauge line from Quetta to Taftan on the Pakistan-Iranian border. [8]The proposed railway would support the transport of high-value goods to Europe and Central Asia.
An electro-mechanical treadle. In railway signalling, a treadle is a mechanical or electrical device that detects that a train wheel has passed a particular location. They are used where a track circuit requires reinforcing with additional information about a train's location, such as around an automatic level crossing, or in an annunciator circuit, which sounds a warning that a train has ...
Facing or trailing are railway turnouts (or 'points' in the UK) in respect to whether they are divergent or convergent. When a train traverses a turnout in a facing direction, it may diverge onto either of the two routes. When travelled in a trailing direction, the two routes converge onto each other. [1] [2] [3]
Railway interlocking is of British origin, where numerous patents were granted. In June 1856, John Saxby received the first patent for interlocking switches and signals. [2] [3]: 23–24 In 1868, Saxby (of Saxby & Farmer) [4] was awarded a patent for what is known today in North America as “preliminary latch locking”.