Casualties and collisions by speed limit and road length, Bristol: 2020 to 2024
Speed Limit (mph)	Collisions	Fatal	Serious	KSI	Slight	Total length (km)	% of LA roads	Collisions per km	Fatal per km	Serious per km	KSI per km	Slight per km	Fatal per collision	Serious per collision	KSI per collision	Slight per collision
20	2295	7	356	363	2152	713.4	57.8	3.22	0.01	0.50	0.51	3.02	0.003	0.155	0.158	0.938
30	1424	20	252	272	1403	150.6	12.2	9.46	0.13	1.67	1.81	9.32	0.014	0.177	0.191	0.985
40	222	7	42	49	225	51.2	4.1	4.34	0.14	0.82	0.96	4.39	0.032	0.189	0.221	1.014
50	9	0	4	4	8	2.1	0.2	4.29	0.00	1.90	1.90	3.81	0.000	0.444	0.444	0.889
60	7	0	2	2	7	4.2	0.3	1.67	0.00	0.48	0.48	1.67	0.000	0.286	0.286	1.000
70	37	4	10	14	54	27.4	2.2	1.35	0.15	0.36	0.51	1.97	0.108	0.270	0.378	1.459
Source: DfT STATS19 and OSM