Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 6 Jan 1986 | Hertsmere | 1 | 1 | Fatal |
| Sun 12 Jan 1986 | St. Albans | 1 | 1 | Slight |
| Sun 12 Jan 1986 | Hertsmere | 1 | 1 | Slight |
| Thu 16 Jan 1986 | Hertsmere | 3 | 2 | Slight |
| Tue 4 Mar 1986 | St. Albans | 2 | 2 | Slight |
| Wed 5 Mar 1986 | Hertsmere | 2 | 1 | Slight |
| Fri 7 Mar 1986 | St. Albans | 2 | 1 | Slight |
| Fri 14 Mar 1986 | Hertsmere | 1 | 1 | Serious |
| Tue 25 Mar 1986 | St. Albans | 1 | 1 | Slight |
| Thu 10 Apr 1986 | Hertsmere | 1 | 1 | Slight |
| Wed 7 May 1986 | Hertsmere | 2 | 1 | Slight |
| Wed 21 May 1986 | Hertsmere | 2 | 1 | Slight |
| Thu 19 Jun 1986 | Hertsmere | 2 | 1 | Slight |
| Fri 27 Jun 1986 | Hertsmere | 2 | 1 | Slight |
| Mon 30 Jun 1986 | Hertsmere | 2 | 1 | Slight |
| Thu 31 Jul 1986 | Hertsmere | 2 | 1 | Slight |
| Tue 5 Aug 1986 | Hertsmere | 2 | 1 | Slight |
| Mon 18 Aug 1986 | St. Albans | 2 | 1 | Slight |
| Thu 21 Aug 1986 | Hertsmere | 2 | 1 | Slight |
| Fri 29 Aug 1986 | Hertsmere | 1 | 1 | Serious |
| Tue 2 Sep 1986 | St. Albans | 1 | 1 | Serious |
| Sat 13 Sep 1986 | Hertsmere | 2 | 1 | Slight |
| Thu 25 Sep 1986 | Hertsmere | 2 | 1 | Slight |
| Wed 1 Oct 1986 | Hertsmere | 2 | 1 | Slight |
| Thu 9 Oct 1986 | Hertsmere | 2 | 1 | Slight |
| Wed 22 Oct 1986 | Hertsmere | 2 | 4 | Slight |
| Sat 1 Nov 1986 | Hertsmere | 2 | 1 | Slight |
| Mon 3 Nov 1986 | Hertsmere | 1 | 1 | Slight |
| Thu 6 Nov 1986 | Hertsmere | 2 | 1 | Slight |
| Mon 17 Nov 1986 | Hertsmere | 2 | 1 | Slight |
| Fri 21 Nov 1986 | Hertsmere | 2 | 1 | Serious |
| Sat 22 Nov 1986 | St. Albans | 2 | 1 | Slight |
| Tue 16 Dec 1986 | St. Albans | 2 | 3 | Serious |
| Tue 16 Dec 1986 | Hertsmere | 1 | 1 | Slight |