Black spots are road locations that have a record of large numbers of crashes. There are often common problems at these sites which can be treated with engineering methods.
Examples of problem solving for intersection-related crashes:
- conversion of unsignalised cross intersections to roundabouts
- new or revised traffic signals
- grade separation
- staggered cross intersections
- extension of median through intersections (turn prohibited)
- provision of protected right turn facilities.
Examples of problem solving for non-intersection-related crashes:
- central median to divide the road
- pedestrian facilities
- shoulder sealing
- removal and/or shielding of roadside hazards
- road delineation
- overtaking lanes.