encyclopedia

SUBBALLAST

A material, superior in composition to the roadbed materials, that is spread on the track roadbed before the ballast is spread. (TRB)

SUBCONTRACT

A secondary contract undertaking some or all of the obligations of a primary or previous contract. (TRB)

SUBLEASE

The subletting of a portion of the premises covered by the lease.

SUBREGIONS

The nine geographic sub-regions of Los Angeles County include Arroyo Verdugo, Central Los Angeles, Gateway Cities, Las Virgenes/Malibu, North Los Angeles County, San Fernando Valley, San Gabriel Valley, South Bay Cities and Westside Cities.

SUBSCRIPTION BUS SERVICE

1. A bus service in which routes and schedules are prearranged to meet the travel needs of riders who sign up for the service in advance. The level of service is generally higher than that of regular passenger service (fewer…

SUBSCRIPTION VAN SERVICE

Service similar to that provided by a subscription bus, except that the van may be privately owned, leased from a public or private company, or provided by the employer. The driver is usually a member of the group. (TRB)

SUBSIDIZED TAXI SERVICE

A taxicab service in which the fares are lower than actual taxi fares and the taxi company is reimbursed the difference. The service may be provided to the general public or to special groups, such as elderly people. Funds for…

SUBSIDY

Scripts, tokens, vouchers, Transit Checks, transit passes, or other fare media provided by MTA for use on non-MTA transportation providers.

SUBSTATION

A facility used to transform 34.5 Kilovolts Alternating Current (KVAC) to lower voltages for distribution to station facilities. Also see Tracion Power Substation (TPSS)