Table M: Contributory Factors: Reported accidents1,2 by severity, 2021
Road environment contributed4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Road environment contributed 4 (Total) |
19 |
16 |
173 |
14 |
214 |
13 |
406 |
14 |
| Poor or defective road surface |
2 |
2 |
20 |
2 |
12 |
1 |
34 |
1 |
| Deposit on road (eg oil, mud, chippings) |
0 |
0 |
25 |
2 |
15 |
1 |
40 |
1 |
| Slippery road (due to weather) |
12 |
10 |
95 |
8 |
132 |
8 |
239 |
8 |
| Inadequate/masked signs or road markings |
1 |
1 |
10 |
1 |
15 |
1 |
26 |
1 |
| Defective traffic signals |
0 |
0 |
2 |
0 |
6 |
0 |
8 |
0 |
| Traffic calming (eg road humps, chicanes |
0 |
0 |
2 |
0 |
2 |
0 |
4 |
0 |
| Temporary road layout (eg contraflow) |
0 |
0 |
4 |
0 |
2 |
0 |
6 |
0 |
| Road layout (eg bend, hill, narrow c-way |
2 |
2 |
18 |
2 |
26 |
2 |
46 |
2 |
| Animal or other object in carriageway |
3 |
3 |
12 |
1 |
19 |
1 |
34 |
1 |
| Sunken,raised or slippery inspection cov |
0 |
0 |
0 |
0 |
2 |
0 |
2 |
0 |
Vehicle defects 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Vehicle defects 4 (Total) |
1 |
1 |
15 |
1 |
21 |
1 |
37 |
1 |
| Tyres illegal, defective or under-inflat |
0 |
0 |
6 |
1 |
7 |
0 |
13 |
0 |
| Defective lights or indicators |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
| Defective brakes |
1 |
1 |
4 |
0 |
4 |
0 |
9 |
0 |
| Defective steering or suspension |
0 |
0 |
4 |
0 |
7 |
0 |
11 |
0 |
| Defective or missing mirrors |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
| Overloaded or poorly loaded vehicle/trai |
0 |
0 |
1 |
0 |
1 |
0 |
2 |
0 |
Injudicious action (driver/rider) 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Injudicious action (driver/rider) 4 (Total) |
29 |
25 |
210 |
18 |
315 |
19 |
554 |
19 |
| Disobeyed automatic traffic signal |
1 |
1 |
10 |
1 |
29 |
2 |
40 |
1 |
| Disobeyed Give Way or Stop sign or marki |
4 |
3 |
31 |
3 |
71 |
4 |
106 |
4 |
| Disobeyed double white line |
1 |
1 |
4 |
0 |
4 |
0 |
9 |
0 |
| Disobeyed pedestrian crossing facility |
0 |
0 |
4 |
0 |
7 |
0 |
11 |
0 |
| Illegal turn or direction of travel |
1 |
1 |
9 |
1 |
9 |
1 |
19 |
1 |
| Exceeding speed limit |
14 |
12 |
68 |
6 |
46 |
3 |
128 |
4 |
| Travelling too fast for the conditions |
11 |
9 |
72 |
6 |
85 |
5 |
168 |
6 |
| Following too close |
1 |
1 |
23 |
2 |
65 |
4 |
89 |
3 |
| Vehicle travelling along pavement |
1 |
1 |
4 |
0 |
5 |
0 |
10 |
0 |
| Cyclist entering road from pavement |
1 |
1 |
8 |
1 |
11 |
1 |
20 |
1 |
Driver/rider error or reaction 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Driver/rider error or reaction 4 (Total) |
79 |
68 |
667 |
56 |
950 |
57 |
1,696 |
57 |
| Junction overshoot |
0 |
0 |
14 |
1 |
25 |
1 |
39 |
1 |
| Junction restart |
1 |
1 |
9 |
1 |
12 |
1 |
22 |
1 |
| Poor turn or manoeuvre |
17 |
15 |
151 |
13 |
135 |
8 |
303 |
10 |
| Failed to signal / misleading signal |
1 |
1 |
10 |
1 |
15 |
1 |
26 |
1 |
| Failed to look properly (D/R) |
32 |
27 |
301 |
25 |
497 |
30 |
830 |
28 |
| Failed to judge other pers path/speed (D |
13 |
11 |
130 |
11 |
226 |
14 |
369 |
12 |
| Too close to cyclist,horse or pedestrian |
1 |
1 |
11 |
1 |
19 |
1 |
31 |
1 |
| Sudden braking |
1 |
1 |
32 |
3 |
38 |
2 |
71 |
2 |
| Swerved |
7 |
6 |
19 |
2 |
31 |
2 |
57 |
2 |
| Loss of control |
30 |
26 |
152 |
13 |
158 |
9 |
340 |
11 |
Impairment or distraction (driver/rider) 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Impairment or distraction (driver/rider) 4 (Total) |
17 |
15 |
137 |
11 |
159 |
10 |
313 |
10 |
| Impaired by alcohol (D/R) |
4 |
3 |
44 |
4 |
64 |
4 |
112 |
4 |
| Impaired by drugs (illicit/medicinal) (D |
5 |
4 |
23 |
2 |
27 |
2 |
55 |
2 |
| Fatigue |
1 |
1 |
11 |
1 |
14 |
1 |
26 |
1 |
| Uncorrected defective eyesight |
0 |
0 |
1 |
0 |
3 |
0 |
4 |
0 |
| Illness or disability (mental/physic) (D |
3 |
3 |
29 |
2 |
29 |
2 |
61 |
2 |
| Not display lights at night / in poor vi |
0 |
0 |
2 |
0 |
1 |
0 |
3 |
0 |
| Cyclist wearing dark clothing at night |
0 |
0 |
2 |
0 |
4 |
0 |
6 |
0 |
| Driver using mobile phone |
1 |
1 |
4 |
0 |
3 |
0 |
8 |
0 |
| Distraction in vehicle |
2 |
2 |
22 |
2 |
20 |
1 |
44 |
1 |
| Distraction outside vehicle |
1 |
1 |
7 |
1 |
7 |
0 |
15 |
1 |
Behaviour or inexperience (driver/rider) 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Behaviour or inexperience (driver/rider) 4 (Total) |
23 |
20 |
180 |
15 |
211 |
13 |
414 |
14 |
| Aggressive driving |
7 |
6 |
28 |
2 |
32 |
2 |
67 |
2 |
| Careless/reckless/in a hurry (D/R) |
14 |
12 |
120 |
10 |
136 |
8 |
270 |
9 |
| Nervous/uncertain/panic |
0 |
0 |
10 |
1 |
12 |
1 |
22 |
1 |
| Driving too slow for condits/slow vehi |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
| Inexperienced or learner driver/rider |
5 |
4 |
25 |
2 |
37 |
2 |
67 |
2 |
| Inexperience of driving on the left |
0 |
0 |
2 |
0 |
4 |
0 |
6 |
0 |
| Inexperience with type of vehicle |
2 |
2 |
5 |
0 |
2 |
0 |
9 |
0 |
Vision affected 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Vision affected 4 (Total) |
8 |
7 |
76 |
6 |
119 |
7 |
203 |
7 |
| Stationary or parked vehicle |
0 |
0 |
25 |
2 |
29 |
2 |
54 |
2 |
| Vegetation |
0 |
0 |
3 |
0 |
4 |
0 |
7 |
0 |
| Road layout (eg bend, winding rd, hill c |
1 |
1 |
11 |
1 |
13 |
1 |
25 |
1 |
| Buildings, road signs, street furniture |
0 |
0 |
4 |
0 |
4 |
0 |
8 |
0 |
| Dazzling headlights |
1 |
1 |
3 |
0 |
5 |
0 |
9 |
0 |
| Dazzling sun |
4 |
3 |
21 |
2 |
40 |
2 |
65 |
2 |
| Rain, sleet, snow or fog |
1 |
1 |
6 |
1 |
18 |
1 |
25 |
1 |
| Spray from other vehicles |
0 |
0 |
0 |
0 |
2 |
0 |
2 |
0 |
| Visor/windscreen dirty/scratched/frosted |
0 |
0 |
1 |
0 |
4 |
0 |
5 |
0 |
| Vehicle blind spot |
2 |
2 |
5 |
0 |
5 |
0 |
12 |
0 |
Pedestrian only 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Pedestrian only 4 |
25 |
21 |
184 |
15 |
197 |
12 |
406 |
14 |
| Crossed road masked by stationary/parked |
0 |
0 |
35 |
3 |
28 |
2 |
63 |
2 |
| Pedestrian failed to look properly |
9 |
8 |
102 |
9 |
114 |
7 |
225 |
8 |
| Ped. failed to judge vehicles path or sp |
3 |
3 |
20 |
2 |
22 |
1 |
45 |
2 |
| Wrong use of pedestrian crossing facilit |
1 |
1 |
7 |
1 |
11 |
1 |
19 |
1 |
| Dangerous action in carriageway (eg play) |
3 |
3 |
14 |
1 |
7 |
0 |
24 |
1 |
| Pedestrian impaired by alcohol |
7 |
6 |
28 |
2 |
29 |
2 |
64 |
2 |
| Ped. impaired by drugs (illicit/medicinal) |
2 |
2 |
12 |
1 |
8 |
0 |
22 |
1 |
| Ped. careless / reckless /in a hurry |
4 |
3 |
30 |
3 |
31 |
2 |
65 |
2 |
| Pedestrian wearing dark clothing at nigh |
5 |
4 |
14 |
1 |
5 |
0 |
24 |
1 |
| Ped. disability or illness, mental/physi |
6 |
5 |
4 |
0 |
5 |
0 |
15 |
1 |
Special codes 4
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Special codes 4 (Total) |
7 |
6 |
43 |
4 |
61 |
4 |
111 |
4 |
| Stolen vehicle |
1 |
1 |
3 |
0 |
8 |
0 |
12 |
0 |
| Vehicle in course of crime |
2 |
2 |
14 |
1 |
14 |
1 |
30 |
1 |
| Emergency vehicle on call |
0 |
0 |
1 |
0 |
12 |
1 |
13 |
0 |
| Vehicle door opened or closed negligentl |
1 |
1 |
0 |
0 |
3 |
0 |
4 |
0 |
| Other |
5 |
4 |
25 |
2 |
29 |
2 |
59 |
2 |
Total reported accidents1
| |
Fatal |
Serious 6 |
Slight 6 |
All accidents |
| Contributory factor reported in accident |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
Number |
Per cent3 |
| Total reported accidents1 (Total) |
117 |
|
1,198 |
|
1,669 |
|
2,984 |
100 |
| Number of Contributory Factors 5 |
262 |
|
1988 |
|
2586 |
|
4836 |
|
| Average number of CFs per accident 1,5 |
2.2 |
|
1.7 |
|
1.5 |
|
1.6 |
|
1. Includes only accidents where a police officer attended the scene.
2. Includes only one count of a CF per accident.
3. Columns won't sum to 100 per cent as accidents can have more than one CF.
4. Accidents with more than one CF in a category are only counted once in the category total.
5. Includes all contributory factors e.g. if two cars are involved in the same accident and both are exceeding the speed limit this would count as 2 CFs.
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