49 C.F.R. § 236.787
Protection, cross
An arrangement to prevent the improper operation of a signal, switch, movable-point frog, or derail as the result of a cross in electrical circuits.
Ramp, see § 236.744.
An arrangement to prevent the improper operation of a signal, switch, movable-point frog, or derail as the result of a cross in electrical circuits.
Ramp, see § 236.744.