Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 1 Jan 1986 | St. Albans | 2 | 1 | Slight |
| Tue 21 Jan 1986 | St. Albans | 3 | 1 | Slight |
| Thu 6 Feb 1986 | St. Albans | 3 | 2 | Slight |
| Fri 7 Mar 1986 | St. Albans | 2 | 1 | Slight |
| Sat 15 Mar 1986 | St. Albans | 1 | 1 | Slight |
| Sun 23 Mar 1986 | St. Albans | 2 | 3 | Serious |
| Wed 2 Apr 1986 | St. Albans | 1 | 1 | Slight |
| Fri 18 Apr 1986 | St. Albans | 1 | 1 | Slight |
| Sat 26 Apr 1986 | St. Albans | 2 | 1 | Slight |
| Fri 9 May 1986 | St. Albans | 2 | 1 | Slight |
| Tue 13 May 1986 | St. Albans | 2 | 1 | Slight |
| Tue 20 May 1986 | St. Albans | 1 | 1 | Slight |
| Tue 20 May 1986 | St. Albans | 2 | 1 | Slight |
| Thu 29 May 1986 | North Hertfordshire | 1 | 1 | Slight |
| Fri 13 Jun 1986 | North Hertfordshire | 2 | 2 | Slight |
| Sun 15 Jun 1986 | North Hertfordshire | 2 | 1 | Slight |
| Fri 20 Jun 1986 | North Hertfordshire | 2 | 1 | Slight |
| Mon 23 Jun 1986 | St. Albans | 2 | 5 | Serious |
| Wed 6 Aug 1986 | St. Albans | 3 | 1 | Slight |
| Thu 4 Sep 1986 | St. Albans | 1 | 1 | Slight |
| Mon 8 Sep 1986 | St. Albans | 3 | 1 | Slight |
| Mon 15 Sep 1986 | North Hertfordshire | 2 | 1 | Slight |
| Thu 23 Oct 1986 | St. Albans | 2 | 1 | Slight |
| Sat 1 Nov 1986 | St. Albans | 3 | 1 | Serious |
| Tue 4 Nov 1986 | St. Albans | 2 | 1 | Slight |
| Wed 5 Nov 1986 | St. Albans | 2 | 1 | Slight |
| Sat 15 Nov 1986 | St. Albans | 1 | 1 | Serious |
| Sat 22 Nov 1986 | North Hertfordshire | 2 | 1 | Slight |
| Mon 24 Nov 1986 | St. Albans | 2 | 2 | Slight |
| Wed 3 Dec 1986 | St. Albans | 3 | 1 | Serious |
| Tue 9 Dec 1986 | St. Albans | 2 | 1 | Slight |
| Sat 27 Dec 1986 | St. Albans | 2 | 4 | Serious |