One or more highway work zones located on or near the roadway. A construction zone must be designated and signed in order to have enforceable maximum speed limits.

A speed change lane for the purpose of:

The small three-dimensional angle of vision, measured about the axis of the eye's pupil, and from the surface of the eye, within which angle maximum visual acuity is achieved.

Average Annual Daily Traffic.

American Association of State Highway and Transportation Officials.

A condition manifested in pavement markings by gradual surface erosion, thinning, and disappearance of the film due to wind, water, sand, and vehicle tire wear.

A rate of change of speed (km/h/sec or m/seC2) resulting in an increase in travel speed.

A way of entering or travelling towards a location. It is used when describing which vehicle movements may be permitted at an intersection (such as with an access-only barrier). It is also used when d [..]

See Collision.

The operation of a detector in registering the presence or passage of a vehicle or pedestrian.