Category: Dictionary


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…


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


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…


American Association of State Highway and Transportation Officials.