encyclopedia

HEADSIGN

Line designation and destination sign located above the windshield.

HEADWAY

The amount of time separation between two scheduled vehicles traveling on the same route and in the same direction. With respect to Rail Operations, measured from the time the lead end of the train passes a specific reference point to…

HEADWAY CONTROL

The means by which the desired headway is maintained. (NTSC)

HEAVY RAIL

A rail passenger system with a completely separated right-of-way, usually either a subway or elevated route; a type of transit vehicle railway with the capacity for a “head volume” of traffic and characterized by exclusive right-of-way, multiple car trains, high…

HEAVY RAIL VEHICLE

Electrically propelled passenger carrying vehicle. In current MTA terminology, one-half of a dependent pair of vehicles which run in train sets of one, two, or three pairs of vehicles at speeds to 70 miles per hour using third rail power.

HEDGING

Any method of minimizing the risk of price change. Since the movement of cash prices is usually in the same direction and about in the same degree as the movement of the present prices of futures contracts, any loss (or…