Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 6 Jan 1986 | Dacorum | 2 | 1 | Slight |
| Thu 23 Jan 1986 | Dacorum | 2 | 1 | Slight |
| Sat 25 Jan 1986 | Dacorum | 1 | 1 | Slight |
| Sat 15 Feb 1986 | St. Albans | 2 | 3 | Slight |
| Mon 17 Feb 1986 | St. Albans | 4 | 4 | Slight |
| Mon 3 Mar 1986 | Dacorum | 2 | 1 | Slight |
| Thu 6 Mar 1986 | Dacorum | 2 | 1 | Slight |
| Wed 19 Mar 1986 | Dacorum | 2 | 1 | Slight |
| Thu 27 Mar 1986 | Dacorum | 2 | 1 | Slight |
| Tue 1 Apr 1986 | Dacorum | 1 | 1 | Serious |
| Wed 9 Apr 1986 | St. Albans | 2 | 1 | Slight |
| Fri 16 May 1986 | Dacorum | 3 | 1 | Slight |
| Sat 17 May 1986 | St. Albans | 2 | 3 | Slight |
| Thu 29 May 1986 | Dacorum | 1 | 1 | Slight |
| Sat 5 Jul 1986 | Dacorum | 3 | 1 | Slight |
| Sat 5 Jul 1986 | Dacorum | 1 | 1 | Slight |
| Sat 12 Jul 1986 | St. Albans | 2 | 4 | Slight |
| Mon 21 Jul 1986 | Dacorum | 2 | 1 | Slight |
| Fri 1 Aug 1986 | St. Albans | 1 | 1 | Slight |
| Wed 6 Aug 1986 | Dacorum | 2 | 2 | Serious |
| Tue 12 Aug 1986 | St. Albans | 2 | 4 | Fatal |
| Thu 14 Aug 1986 | Dacorum | 2 | 1 | Serious |
| Tue 2 Sep 1986 | Dacorum | 1 | 1 | Slight |
| Wed 3 Sep 1986 | Dacorum | 2 | 1 | Slight |
| Sat 18 Oct 1986 | Dacorum | 2 | 1 | Slight |
| Mon 20 Oct 1986 | Dacorum | 1 | 1 | Slight |
| Wed 22 Oct 1986 | Dacorum | 5 | 1 | Slight |
| Sat 25 Oct 1986 | Dacorum | 2 | 1 | Slight |
| Mon 27 Oct 1986 | Dacorum | 1 | 1 | Serious |
| Wed 5 Nov 1986 | Dacorum | 1 | 1 | Slight |
| Sat 8 Nov 1986 | Dacorum | 2 | 1 | Slight |
| Thu 20 Nov 1986 | Dacorum | 2 | 1 | Slight |
| Fri 21 Nov 1986 | Dacorum | 2 | 2 | Slight |
| Fri 5 Dec 1986 | Dacorum | 2 | 1 | Slight |
| Sat 6 Dec 1986 | Dacorum | 3 | 1 | Serious |
| Fri 12 Dec 1986 | St. Albans | 3 | 2 | Serious |
| Sat 13 Dec 1986 | Dacorum | 2 | 1 | Slight |
| Mon 15 Dec 1986 | Dacorum | 2 | 1 | Slight |