Junction codes are only used for crashes which occur at or within 20 metres of a junction. If two or more junctions are present within 20 metres the junction closest to the to the crash location is used.
G. Code 03, 'T or staggered junction' includes 3 arm junctions at which 2 roads join at an acute angle (previously known as 'Y' junction).
H. Use code 05 'Slip road' only for accidents occurring within 20 metres of the point where a slip road (including filter lane at roundabout - See 1.14 Note F) merges with or diverges from the nearside of the main carriageway.
Accidents occurring on slip roads, within 20 metres of a roundabout should be coded 01 or 02 as appropriate. Accidents occurring on slip roads which are not within 20 metres of a junction should be coded 00.
I. Crossroads: four arm junction where the alignments of both roads are uninterrupted whatever the angle of the crossing, and the arms are not staggered.
J. Multiple Junction: a junction with more than 4 arms (except roundabouts).
- T junction
- Mini roundabout
- Private drive
- Multiple junction
- Slip road