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Many people consider four-quadrant gates to be safer than two-quadrant gates because they prevent drivers from illegally and dangerously driving their vehicles around lowered gates, in an attempt to pass before the train does. However, these gates are only safer if there is a way of ensuring that the crossing is clear before clearing the train ...
They were connected to 81-inch (2,057 mm) driving wheels by a variety of valve gear: most had Stephenson valve gear and 11-inch (279 mm) piston valves; No. 1026 was fitted up with Youngs rotary valves and valve gear in 1903, [1] but later reverted to Stephensons valve gear.
The official name of this gauge is the Gabarit passe-partout international (PPI, literally "pass-everywhere international gauge"), and it came into force in 1914. The European (Berne) loading gauge is usually 3,150 mm (10 ft 4 in) wide by 3,175 mm (10 ft 5.0 in) rising to 4,280 mm (14 ft 1 in) in the centre.
When a train has made a full brake application due to adverse event, or has lost its train air due to a defective valve (a "kicker"), or a broken air line or train separation. The train crew will normally declare that they are "in emergency" over the train radio, thus warning other trains and the dispatcher that there is a problem. [101] [102]
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The South African Railways Class NG G13 2-6-2+2-6-2 of 1927 are a class of narrow gauge articulated steam locomotives.. Between 1927 and 1929, the South African Railways placed twelve Class NG G13 Garratt articulated steam locomotives with a 2-6-2+2-6-2 Double Prairie type wheel arrangement in service on the Langkloof and Alfred County Railway narrow gauge lines.
Level crossing (LC), railroad crossing, railway crossing, train crossing, or grade crossing A crossing on one level ("at-grade intersection")—without recourse to a bridge or tunnel—generally of a railway line by a road or path. Not to be confused with non-dead-end railways (see Rail crossing) Light engine
The Pennsylvania Railroad's class E2, E3, E7 steam locomotives were of the 4-4-2 "Atlantic" passenger type, frequently called light Atlantics after the introduction of the heavier E6 Atlantics. All were similar in size and boiler capacity but differed in firebox type, valves and valve gear and cylinder diameter.