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Alignment
The geometric characteristics or layout of a roadway. Alignment is usually subdivided into horizontal alignment. Includes straight, curve left, curve right.
AASHTO
American Association of State Highway and Transportation Officials
Booster Seat
A "belt-positioning seat" that positions a child on a vehicle seat to improve the fit of the lap and shoulder seat belt system. This seat is recommended for children who weigh 40 pounds or more.
Collision With Object Not Fixed
A motor vehicle in transport strikes a pedestrian, pedalcycle, railway vehicle, animal, motor vehicle in transport, parked motor vehicle, falling, work zone/maintenance equipment, other moveable object or is struck by falling, shifting cargo or anything set in motion by a motor vehicle.
Centerline, Solid and Broken Line
A centerline that is both solid and broken indicates that passing is permitted in one direction.
Authorized Speed Limit
Authorized speed limit for the motor vehicle at the time of the crash. The authorization may be indicated by the posted speed limit, blinking sign at construction zones, etc.
Collision
A motor vehicle crash, other than an overturning crash, in which the first harmful event is a collision of a motor vehicle in transport with another motor vehicle, other property, animal or pedestrian.
Backing
A start from a parked or stopped position in the direction of the rear of the motor vehicle.
Air Bag Deployed
Deployment status of an air bag relative to the position in the vehicle for this occupant.
Hit and Run
Crashes where the vehicle, or the driver of the vehicle, in transport is a contact vehicle in the crash, and departs the scene without stopping to render aid.
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