encyclopedia

WAIS (WIDE AREA INFORMATION SERVER)

A powerful system for searching large amounts of information very quickly over the Internet.

WAITING TIME, SHINE TIME, HELD FOR DUTY TIME

The time an operator is required to remain on duty, until assigned to work or released and is considered work time.

WARNING LIGHTS

Lights indicating mechanical problems in one or more of four areas: 1) Hot engine. 2) Emergency door. 3) Low Air. 4) Low oil.

WARRANTY SPECIFICATIONS

A type of performance specifications that guarantees the integrity of a product and assigns responsibility for the repair or replacement of defects to the contractor.

WASH/COUPLE MODE (W/C)

The Wash/Couple Mode shall be used to wash cars during car wash operations. Maximum operating speed is 2 mph.

WASHOUT

1) Planning – The erosion of an embankment supporting a road or a railroad. 2) Operations – A violent stop signal given by hand (or lantern at night).

WAV

Wav (pronounced “wave”) is the file extension used on some types of audio files.

WAYFINDING

The orderly presentation needed to let people comfortably and succesfully navigate in an environment. Signage is just one tool used to communicate that information.

WAYSIDE CONTROL SYSTEM

A command and control system in which transit units (cars or trains) are controlled by electronic or mechanical devices along the track or other guideway. (TRB)