encyclopedia

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)

WAYSIDE EQUIPMENT

Train control or movement apparatus which is located along the track or wayside as opposed to the control center or other remote location. (NTSC)

WAYSIDE INTRUSION DETECTION SYSTEM (WIDS)

Safety/security system on the Green Line detecting unauthorized intrusion into the right-of-way.

WAYSIDE RESTRICTION

Operating instructions issued by the Central Control Facility (CCF) to rail personnel advising of conditions affecting normal rail operations.

WAYSIDE TRAIN STOP

A mechanical arm located on the wayside which, when in the up (trip) position, initiates an emergency brake application on a train which passes it. (NTSC)