At natural ground level when describing transitways or streets; the intersecting transitways and streets are at the same elevation and actually intersect. (Grade crossings that are not separated.)
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ATC
Automatic Train Control.
ATMS
Advanced Transportation Management System
ATO
Automatic Train Operation.
ATP
Automatic Train Protection.
ATP BYPASS
Operating Modes (Light Rail).
ATS
Automatic Train Supervision.
ATSAC
Automated Traffic Surveillance and Control System
ATTAINMENT AREA
An area considered to have air quality that meets or exceeds the U.S Environmental Protection Agency (EPA) health standards used in the Clean Air Act. Nonattainment areas are areas considered not to have met these standards for designited pollutants. An…
ATTB
Advanced Technology Transit Bus – Development project in conjunction with Northrop Grumman aimed at incorporating recent technological advancements into the design of transit buses. The objective vehicles that meet specific goals to include mimimum cost, reduction in weight, reduction in…