Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 5 Jan 1981 | East Hertfordshire | 2 | 1 | Slight |
| Mon 5 Jan 1981 | East Hertfordshire | 2 | 1 | Slight |
| Wed 7 Jan 1981 | Stevenage | 1 | 1 | Slight |
| Thu 8 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Thu 8 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Fri 9 Jan 1981 | North Hertfordshire | 2 | 1 | Slight |
| Fri 9 Jan 1981 | North Hertfordshire | 2 | 1 | Slight |
| Mon 12 Jan 1981 | Stevenage | 1 | 1 | Slight |
| Sat 17 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Sat 17 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Mon 19 Jan 1981 | North Hertfordshire | 1 | 1 | Slight |
| Tue 20 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Tue 20 Jan 1981 | Stevenage | 2 | 1 | Slight |
| Mon 26 Jan 1981 | Stevenage | 1 | 1 | Slight |
| Mon 26 Jan 1981 | Stevenage | 1 | 1 | Slight |
| Sun 1 Feb 1981 | Stevenage | 2 | 1 | Slight |
| Sun 1 Feb 1981 | Stevenage | 2 | 1 | Slight |
| Thu 5 Feb 1981 | Stevenage | 3 | 3 | Slight |
| Thu 5 Feb 1981 | Stevenage | 3 | 3 | Slight |
| Thu 5 Feb 1981 | East Hertfordshire | 1 | 1 | Serious |
| Wed 11 Feb 1981 | North Hertfordshire | 2 | 1 | Slight |
| Mon 16 Feb 1981 | North Hertfordshire | 1 | 1 | Serious |
| Fri 27 Feb 1981 | Stevenage | 3 | 1 | Slight |
| Thu 5 Mar 1981 | North Hertfordshire | 2 | 1 | Slight |
| Thu 5 Mar 1981 | North Hertfordshire | 2 | 1 | Slight |
| Thu 5 Mar 1981 | East Hertfordshire | 2 | 1 | Slight |
| Thu 5 Mar 1981 | East Hertfordshire | 2 | 1 | Slight |
| Thu 5 Mar 1981 | East Hertfordshire | 2 | 1 | Slight |
| Tue 10 Mar 1981 | North Hertfordshire | 2 | 1 | Slight |
| Tue 10 Mar 1981 | North Hertfordshire | 2 | 1 | Slight |
| Tue 10 Mar 1981 | East Hertfordshire | 3 | 4 | Serious |
| Wed 11 Mar 1981 | Stevenage | 1 | 1 | Serious |
| Wed 11 Mar 1981 | Stevenage | 1 | 1 | Serious |
| Fri 13 Mar 1981 | Stevenage | 1 | 1 | Slight |
| Fri 13 Mar 1981 | Stevenage | 2 | 2 | Slight |
| Tue 17 Mar 1981 | Stevenage | 2 | 1 | Slight |
| Tue 17 Mar 1981 | Stevenage | 2 | 1 | Slight |
| Thu 19 Mar 1981 | Stevenage | 1 | 1 | Slight |
| Thu 19 Mar 1981 | Stevenage | 1 | 1 | Slight |
| Fri 20 Mar 1981 | Stevenage | 1 | 1 | Slight |
| Fri 20 Mar 1981 | Stevenage | 1 | 1 | Slight |
| Fri 20 Mar 1981 | East Hertfordshire | 2 | 1 | Slight |
| Fri 20 Mar 1981 | East Hertfordshire | 2 | 1 | Slight |
| Mon 30 Mar 1981 | Stevenage | 2 | 1 | Slight |
| Thu 9 Apr 1981 | East Hertfordshire | 3 | 1 | Serious |
| Fri 10 Apr 1981 | East Hertfordshire | 2 | 1 | Serious |
| Fri 10 Apr 1981 | East Hertfordshire | 2 | 1 | Serious |
| Fri 10 Apr 1981 | East Hertfordshire | 1 | 1 | Serious |
| Sat 25 Apr 1981 | East Hertfordshire | 2 | 3 | Serious |
| Thu 30 Apr 1981 | East Hertfordshire | 1 | 1 | Slight |
| Sat 16 May 1981 | North Hertfordshire | 2 | 1 | Slight |
| Sat 16 May 1981 | North Hertfordshire | 2 | 1 | Slight |
| Sun 17 May 1981 | Stevenage | 4 | 2 | Serious |
| Sat 23 May 1981 | East Hertfordshire | 1 | 1 | Slight |
| Sat 23 May 1981 | Stevenage | 2 | 2 | Slight |
| Sun 24 May 1981 | East Hertfordshire | 2 | 2 | Slight |
| Thu 11 Jun 1981 | East Hertfordshire | 1 | 1 | Slight |
| Thu 11 Jun 1981 | East Hertfordshire | 1 | 1 | Slight |
| Mon 15 Jun 1981 | East Hertfordshire | 2 | 1 | Slight |
| Mon 15 Jun 1981 | East Hertfordshire | 2 | 1 | Slight |
| Tue 16 Jun 1981 | East Hertfordshire | 2 | 1 | Slight |
| Tue 16 Jun 1981 | East Hertfordshire | 2 | 1 | Slight |
| Sun 5 Jul 1981 | East Hertfordshire | 2 | 2 | Slight |
| Sun 5 Jul 1981 | East Hertfordshire | 2 | 2 | Slight |
| Mon 6 Jul 1981 | Stevenage | 1 | 1 | Slight |
| Mon 6 Jul 1981 | Stevenage | 1 | 1 | Slight |
| Tue 7 Jul 1981 | Stevenage | 2 | 1 | Serious |
| Tue 7 Jul 1981 | Stevenage | 2 | 1 | Serious |
| Wed 8 Jul 1981 | Stevenage | 2 | 1 | Slight |
| Wed 8 Jul 1981 | Stevenage | 2 | 1 | Slight |
| Mon 20 Jul 1981 | Stevenage | 2 | 1 | Slight |
| Mon 20 Jul 1981 | Stevenage | 2 | 1 | Slight |
| Wed 22 Jul 1981 | East Hertfordshire | 1 | 1 | Slight |
| Fri 24 Jul 1981 | Stevenage | 2 | 1 | Slight |
| Sat 1 Aug 1981 | Stevenage | 2 | 2 | Slight |
| Sat 1 Aug 1981 | Stevenage | 2 | 2 | Slight |
| Sun 9 Aug 1981 | East Hertfordshire | 3 | 1 | Slight |
| Fri 14 Aug 1981 | Stevenage | 2 | 2 | Slight |
| Sun 16 Aug 1981 | East Hertfordshire | 1 | 1 | Slight |
| Sat 22 Aug 1981 | Stevenage | 1 | 2 | Serious |
| Tue 25 Aug 1981 | Stevenage | 2 | 1 | Serious |
| Tue 1 Sep 1981 | North Hertfordshire | 2 | 1 | Slight |
| Tue 1 Sep 1981 | North Hertfordshire | 2 | 1 | Slight |
| Fri 4 Sep 1981 | East Hertfordshire | 1 | 1 | Slight |
| Fri 4 Sep 1981 | East Hertfordshire | 1 | 1 | Slight |
| Sun 13 Sep 1981 | North Hertfordshire | 2 | 1 | Slight |
| Sun 13 Sep 1981 | North Hertfordshire | 2 | 1 | Slight |
| Tue 15 Sep 1981 | East Hertfordshire | 1 | 1 | Serious |
| Fri 18 Sep 1981 | Stevenage | 2 | 1 | Slight |
| Sun 20 Sep 1981 | East Hertfordshire | 2 | 5 | Serious |
| Sun 27 Sep 1981 | Stevenage | 1 | 1 | Slight |
| Thu 1 Oct 1981 | Stevenage | 1 | 1 | Slight |
| Thu 1 Oct 1981 | Stevenage | 1 | 1 | Slight |
| Fri 9 Oct 1981 | North Hertfordshire | 1 | 1 | Serious |
| Fri 9 Oct 1981 | North Hertfordshire | 1 | 1 | Serious |
| Sat 17 Oct 1981 | North Hertfordshire | 1 | 2 | Slight |
| Sat 24 Oct 1981 | East Hertfordshire | 2 | 1 | Slight |
| Wed 28 Oct 1981 | Stevenage | 1 | 1 | Slight |
| Thu 5 Nov 1981 | Stevenage | 2 | 1 | Slight |
| Thu 5 Nov 1981 | Stevenage | 2 | 1 | Slight |
| Tue 17 Nov 1981 | East Hertfordshire | 1 | 1 | Slight |
| Tue 17 Nov 1981 | East Hertfordshire | 1 | 1 | Slight |
| Thu 19 Nov 1981 | Stevenage | 2 | 4 | Fatal |
| Tue 24 Nov 1981 | Stevenage | 2 | 2 | Serious |
| Tue 24 Nov 1981 | Stevenage | 2 | 2 | Serious |
| Sat 28 Nov 1981 | East Hertfordshire | 3 | 1 | Slight |
| Sat 28 Nov 1981 | North Hertfordshire | 1 | 1 | Serious |
| Sat 28 Nov 1981 | North Hertfordshire | 1 | 1 | Serious |