Category: Dictionary

511

The National Traveler Information phone number that will provide local freeway, transit, rideshare, airport, general emergencey, and other traveler related services. 511 is targeted for deployment in Los Angeles County in 2010 and will ensure that our region complies with…

A CAR

The odd numbered passenger vehicle of a dependant pair that carries the air compressor and Automatic Train Protection (ATP) equipment.

A-R-T

Art for Rapid Transit (Previously Art for Rail Transit.)

AA/DEIS

Alternatives Analysis/Draft Environmental Impact Statement. A detailed informational document that presents an analysis of all reasonable alternatives to resolve a transportation need, the probable environmental effects and mitigation measures for significant effects. Under federal law, the AA/DEIS was replaced with…

AADT

Annual average daily traffic.

AASHTO

American Association of State Highway and Transportation Officials.

AAWDT

Annual Average Weekday Traffic.

AB

Vehicle Type Code: Articulated buses

ABA

American Bus Association.