Railway Engineering
Creep is the

Longitudinal movement of rail
Vertical movement of rail
Lateral movement of rail
Difference in level of two rails

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Railway Engineering
Switch angle is the angle between

the gauge face of the stock rail and outer face of the tongue rail
the gauge face of the stock rail and tongue rail
the outer face of the stock rail and tongue rail
the outer face of the stock rail and the gauge face of the tongue rail

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