Accident Severity
1 = Fatal
2 = Serious
3 = Slight

Accident Month
1 = January
2 = February
3 = March
4 = April
5 = May
6 = June
7 = July
8 = August
9 = September
10 = October
11 = November
12 = December

Day of Week
1 = Sunday
2 = Monday
3 = Tuesday
4 = Wednesday
5 = Thursday
6 = Friday
7 = Saturday

1 = Roundabout
2 = One way street
3 = Dual carriageway - 2 lanes
4 = Dual carriageway - 3+ lanes
5 = Single carriageway - single track
6 = Single carriageway - 2 lanes
7 = Single carriageway - 3 lanes
8 = Single carriageway - 4+ lanes
9 = Unknown

Junction Detail
0 = Not at junction or within 20 metres
1 = Roundabout
2 = Mini-roundabout
3 = T, Y or staggered junction
5 = Slip road
6 = Crossroads
7 = Multiple junction
8 = Private drive or entrance
9 = Other junction

Junction Control
1 = Authorised person
2 = Auto traffic signal
3 = Stop sign
4 = Give way sign/marks
5 = Uncontrolled

Pedestrian Crossing - Physical Facilities
0 = No crossing facility within 50 metres
1 = Zebra
4 = Pelican or similar non-junct pedestrian light crossing
5 = Pedestrian phase at traffic signal junction
8 = Central refuge
9 = Footbridge or subway

Light Conditions
1 = Daylight - lights present
2 = Daylight - no lighting
3 = Daylight - lightng unknown
4 = Darkness - lights lit
5 = Darkness - lights unlit
6 = Darkness - no lighting
7 = Darkness - lightng unknown

Weather Conditions
1 = Fine no high winds
2 = Raining no high winds
3 = Snowing no high winds
4 = Fine + high winds
5 = Raining + high winds
6 = Snowing + high winds
7 = Fog or mist
8 = Other
9 = Unknown

Road Surface Conditions
1 = Dry
2 = Wet or damp
3 = Snow
4 = Frost or ice
5 = Flood over 3cm. deep
6 = Oil or diesel (from 1999)
7 = Mud (from 1999)

1 = At scene
2 = Elsewhere