encyclopedia

MASKING

A computer technique of blocking out or reformatting the display of information, such as substituting asterisks for characters when inputting passwords, or adding the necessary dashes to a telephone number on a computer display or report.

MASS TRANSIT

Transportation vehicles which provide for movement of relatively large numbers of persons in shared vehicles; another name for public transportation.

MASS TRANSIT ACCOUNT

The federal account, established by the Surface Transportation Assistance Act of 1982, into which a designated portion of the federal Highway Trust Fund revenue from motor fuel taxes is placed. This account is used for federal mass transportation assistance. (APTA)

MASS TRANSPORTATION

Transportation by bus, or rail, or other conveyance, either publicly or privately owned, providing to the public general or special service (but not including school buses or charter or sightseeing service) on a regular and continuing basis.

MASTER CONTROLLER

The device which generates local and trainlined control signals to the propulsion system or brake system of a transit vehicle.