Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 27 Jan 1986 | East Hertfordshire | 2 | 1 | Slight |
| Tue 28 Jan 1986 | Uttlesford | 2 | 1 | Slight |
| Mon 3 Feb 1986 | Uttlesford | 2 | 1 | Slight |
| Sat 8 Feb 1986 | Uttlesford | 2 | 2 | Serious |
| Sat 8 Feb 1986 | Uttlesford | 2 | 1 | Slight |
| Sun 16 Feb 1986 | East Hertfordshire | 1 | 1 | Serious |
| Sun 16 Mar 1986 | East Hertfordshire | 2 | 1 | Slight |
| Thu 20 Mar 1986 | East Hertfordshire | 2 | 1 | Slight |
| Thu 27 Mar 1986 | Uttlesford | 3 | 1 | Slight |
| Wed 2 Apr 1986 | East Hertfordshire | 2 | 1 | Slight |
| Sun 6 Apr 1986 | Uttlesford | 2 | 1 | Slight |
| Wed 16 Apr 1986 | Uttlesford | 2 | 2 | Slight |
| Thu 17 Apr 1986 | Uttlesford | 2 | 2 | Serious |
| Wed 7 May 1986 | Uttlesford | 1 | 1 | Slight |
| Sun 11 May 1986 | East Hertfordshire | 2 | 1 | Slight |
| Tue 13 May 1986 | Uttlesford | 1 | 1 | Serious |
| Sun 18 May 1986 | Uttlesford | 4 | 3 | Serious |
| Thu 5 Jun 1986 | Uttlesford | 2 | 2 | Slight |
| Fri 6 Jun 1986 | Uttlesford | 1 | 1 | Slight |
| Sat 14 Jun 1986 | Uttlesford | 2 | 1 | Slight |
| Sat 14 Jun 1986 | East Hertfordshire | 1 | 1 | Slight |
| Thu 19 Jun 1986 | Uttlesford | 1 | 1 | Serious |
| Tue 24 Jun 1986 | Uttlesford | 3 | 1 | Slight |
| Thu 10 Jul 1986 | Uttlesford | 1 | 1 | Slight |
| Thu 31 Jul 1986 | Uttlesford | 2 | 1 | Slight |
| Fri 15 Aug 1986 | East Hertfordshire | 2 | 2 | Serious |
| Sun 17 Aug 1986 | Uttlesford | 2 | 3 | Fatal |
| Thu 4 Sep 1986 | Uttlesford | 2 | 1 | Slight |
| Mon 8 Sep 1986 | Uttlesford | 1 | 1 | Slight |
| Fri 12 Sep 1986 | Uttlesford | 1 | 1 | Slight |
| Sun 14 Sep 1986 | Uttlesford | 1 | 2 | Slight |
| Sun 21 Sep 1986 | Uttlesford | 2 | 1 | Slight |
| Sat 11 Oct 1986 | Uttlesford | 3 | 3 | Slight |
| Sat 18 Oct 1986 | Uttlesford | 2 | 2 | Slight |
| Wed 22 Oct 1986 | Uttlesford | 1 | 1 | Slight |
| Wed 22 Oct 1986 | Uttlesford | 2 | 4 | Slight |
| Fri 31 Oct 1986 | Uttlesford | 1 | 1 | Slight |
| Thu 20 Nov 1986 | Uttlesford | 2 | 2 | Slight |
| Tue 25 Nov 1986 | Uttlesford | 3 | 2 | Serious |
| Thu 27 Nov 1986 | Uttlesford | 1 | 2 | Serious |
| Mon 1 Dec 1986 | Uttlesford | 1 | 1 | Serious |
| Sun 7 Dec 1986 | Uttlesford | 3 | 3 | Serious |
| Tue 16 Dec 1986 | Uttlesford | 1 | 1 | Slight |