Definitions L - Z

Front 1

Light of Sight Operation

Back 1

operation on sections without block signals . maintain adequate separation from preceding trains through visual observations.

Front 2

Line of Sight Territory

Back 2

Mainline tracks not protected by block signals.

Front 3

Lock Out/Tag Out

Back 3

indicates that traction power substations or other electrical equipment have been de-energized for maintenance, repair or other reasons. Locked out equipment must not be re-energized or turned on unless properly authorized as defined in the applicable SOP.

Front 4

Mainline

Back 4

Track designated for revenue service extending from yard interlockings to terminal stations governed by authority and signal indication.

Front 5

Maintenance of Way (MOW)

Back 5

section that maintains all wayside components of the lightrail including signalization system, substations, catenary, track, and other ROW components. Section includes Systems maintenance, track, and technical service stations.

Front 6

MAS

Back 6

Maximum allowed speed for a section of track.

Front 7

Facing Movement

Back 7

movement of a train over switch with points facing TOWARD oncoming movement.

Front 8

Trailing Movement

Back 8

movement of train over a switch with points face in the DIRECTION the train is moving.

Front 9

Normal Current of Traffic

Back 9

On double track, the normal direction is to the RIGHT.

Front 10

No Clearance Zone

Back 10

area along ROW where there's insufficient space for a person to stand between LRV or on track equipment and a structure. Must have OCC authorization to work in these locations.

Front 11

Occurrence

Back 11

Event without any personal injury in which any damage to facilities, equipment rolling stock, or infrastructure does not disrupt the operations of a transit agency.

Front 12

Operate on Sight

Back 12

Operate prepared to stop within the range of vision.

Front 13

Operating Right of Way

Back 13

The area within 12ft of the centerline of any track on the mainline or yard.

Front 14

Opposing Train

Back 14

Oncoming train on the same track occupied by a rail vehicle and operating in the opposite direction.

Front 15

Passenger Assistance Call Box

Back 15

Yellow boxes located at all stations, used by passengers to request assistance from 911, due to an emergency.

Front 16

Penalty Stop

Back 16

irretrievable full service brake application, which occurs during activation of the emergency door release.