Traffic Violation Terms and Definitions

Commercial Motor Vehicle Any self-propelled or towed motor vehicle used on a highway in interstate commerce to transport passengers or property when the vehicle (1) has a gross vehicle weight rating or gross combination weight rating or gross vehicle weight or gross combination weight, of more than 10,000 lbs or 4,536 kg or (2) used for commercial transport of more than 8 passengers (including the driver); or (3) is used for non-commercial transport of more than 15 passengers, including the driver; or (4) is used in transporting material found by the Secretary of Transportation to be hazardous under 49 U.S.C. 5103 and transporting in a quantity requiring placarding under regulations prescribed by the Secretary under 49 CFR, subtitle B, chapter I, subchapter C. Advance Warning Area Located after the first warning sign but before the work area. BAC Test Result Blood Alcohol Concentration. Alignment The geometric characteristics or layout of a roadway. Alignment is usually subdivided into horizontal alignment. Includes straight, curve left, curve right. Centerline, Broken A broken centerline indicates that passing is permitted. Deployed-Side Air Bag Air bag on side of motor vehicle is deployed out of its cover and protruding into occupant compartment. Bag is fully or partially deflated or inflated. 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. Centerline A pavement marking used to separate traffic traveling in opposite directions. A centerline need not be at the geometrical center of the pavement. Changing Lanes Shift from one traffic lane to another traffic lane moving in the same direction. Alcohol/ Involvement Law enforcement suspected, and documented, that at least one driver or non-motorist involved in the crash had used alcohol. Includes both alcohol use under the legal limit and at or over the legal limit.

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	Did You Know?
	A Request for Discovery is an information request you would make to the prosecutor Ask usually the District Attorney, for relevant information related to your case. If you were cited for speeding, you may want information on the kind of speed measurement device the officer used to clock your vehicle, or the training records for the officer that measured your speed. A simple written request, sent via registered mail to the District Attorney's office, is usually sufficient to exercise this inquiry.