flangeway clearance

heel divergence

throw of the switch

none of the above

between the adjoining faces of the running rail and the check rail near the crossing

between the gauge faces of the stock rail and the tongue rail

through which the tongue rail moves laterally at the toe of the switch

none of the above

always less than flangeway clearance

equal to flangeway clearance

always greater than flangeway clearance

sometimes greater than flangeway clearance

detectors

point lock

iock bar

stretcher bar

in the middle of the track a little in front of the toes of the tongue rail

near and parallel to inner side of one of the rails

at right angle to the rail

near and parallel to inner side of both the rails