Railway Engineering
Consider the following statements : Automatic signaling system results in
1. greater risk
2. higher efficiency
3. avoidance of block instruments
4. higher operating cost of these statements

1 and 4 are correct
2 and 3 are correct
3 and 4 are correct
I and 2 are correct

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Railway Engineering
Lead of crossing is the distance from the

heel of the switch to the toe of the switch
heel of the switch to the theoretical nose of the crossing
toe of the switch to the actual nose of crossing
toe of the switch to the theoretical nose of crossing

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