encyclopedia

VALIDATION

1. The marking of a ticket, pass, or transfer for the purpose of verifying its legitimate use for paid travel, usually giving time and place of marking;_x000D_ 2. The mathematical comparison of two independently obtained sets of data to determine…

VALUE ENGINEERING (VALUE ANALYSIS)

The systematic review by qualified agency and/or contractor personnel of a project, product, or process so as to improve performance, quality, safety, and life-cycle costs.

VAN

Vehicle with a gross vehicle weight rating of less than 10,000 lbs. as identified by the Original Equipment Manufacturer’s weight certificate located on driver’s side door.

VARIABLE

A quantity that may have different values; a data measure used for analysis. (TRB)

VARIABLE COST

A cost that varies in some relation to the level of output or operational activity; for example, the cost of fuel. (TRB)

VARIABLE SWITCH (SLAP AND STAY)

Track switch not requiring alignment for trailing movements and once moved, switch points remain aligned in a trailed position. Variable switches shall be properly aligned manually for facing movements.

VAULT

The part of a farebox or turnstile that holds the money or tokens.

VAULT HOUSE

The house at the divisions, usually located at the bus entrance, which contains the receiver or portable safe where the money from the farebox vaults are “dumped” by the vaulter each time the bus enters the division.