What does the switch angle on a railway track depend on?
Switch Angle: It is the angle between the gauge lines of stock rail and tongue rail at theoretical toe of switch (TTS) in close position. This angle depends upon heel divergence and length of tongue.
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If a train is coming, get out immediately and move quickly toward the oncoming train and away from the tracks at a 45-degree angle. This is to protect you if the train does hit your vehicle. The debris will fly in the same direction as the train's path.
To minimise this rail spreading effect rails are often laid so they are tilted (inclined) slightly inward towards the centre of the track. This equalises the load through the fasteners and avoids the rails being spread apart in use.
In most trains, a basic level of protection is provided by a dead man's handle or pedal. If the driver is taken ill and releases this, the power will be shut off and an emergency brake application will be initiated to stop the train.
251 (US) On most Class I railroads, this rule references the tradition of right hand running on double track (or more) main lines. Trackage signalled for 251 operation typically has full speed signals and speed limits on the right main, and reduced speed (dwarf) signals and speed limits on the left main.