Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sun 20 Jan 1991 | St. Albans | 1 | 1 | Slight |
| Tue 22 Jan 1991 | St. Albans | 2 | 2 | Slight |
| Tue 22 Jan 1991 | St. Albans | 5 | 1 | Slight |
| Wed 23 Jan 1991 | St. Albans | 2 | 1 | Serious |
| Wed 23 Jan 1991 | St. Albans | 1 | 1 | Fatal |
| Thu 24 Jan 1991 | St. Albans | 2 | 1 | Slight |
| Sun 27 Jan 1991 | Barnet | 1 | 1 | Serious |
| Thu 31 Jan 1991 | St. Albans | 2 | 1 | Slight |
| Thu 31 Jan 1991 | St. Albans | 2 | 1 | Slight |
| Sat 2 Feb 1991 | Hertsmere | 1 | 1 | Serious |
| Tue 5 Feb 1991 | St. Albans | 1 | 1 | Serious |
| Mon 11 Feb 1991 | St. Albans | 2 | 1 | Slight |
| Thu 14 Feb 1991 | Hertsmere | 2 | 2 | Slight |
| Fri 15 Feb 1991 | St. Albans | 2 | 1 | Serious |
| Fri 15 Feb 1991 | St. Albans | 2 | 1 | Serious |
| Sat 16 Feb 1991 | St. Albans | 1 | 1 | Slight |
| Sun 17 Feb 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 19 Feb 1991 | St. Albans | 1 | 1 | Fatal |
| Fri 22 Feb 1991 | St. Albans | 2 | 1 | Slight |
| Thu 28 Feb 1991 | Hertsmere | 1 | 1 | Serious |
| Sat 2 Mar 1991 | St. Albans | 1 | 1 | Slight |
| Mon 4 Mar 1991 | St. Albans | 2 | 1 | Slight |
| Sat 9 Mar 1991 | Barnet | 3 | 1 | Serious |
| Fri 15 Mar 1991 | St. Albans | 1 | 1 | Slight |
| Sat 16 Mar 1991 | St. Albans | 2 | 1 | Serious |
| Tue 19 Mar 1991 | St. Albans | 2 | 1 | Slight |
| Wed 27 Mar 1991 | St. Albans | 2 | 1 | Slight |
| Tue 2 Apr 1991 | St. Albans | 2 | 1 | Slight |
| Tue 2 Apr 1991 | St. Albans | 1 | 1 | Serious |
| Wed 3 Apr 1991 | St. Albans | 2 | 1 | Slight |
| Tue 16 Apr 1991 | St. Albans | 2 | 1 | Serious |
| Tue 16 Apr 1991 | Barnet | 2 | 2 | Serious |
| Fri 19 Apr 1991 | St. Albans | 2 | 1 | Slight |
| Wed 24 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 29 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 1 May 1991 | Hertsmere | 2 | 1 | Serious |
| Fri 10 May 1991 | Hertsmere | 1 | 1 | Slight |
| Wed 15 May 1991 | St. Albans | 3 | 2 | Slight |
| Thu 23 May 1991 | St. Albans | 3 | 1 | Serious |
| Fri 24 May 1991 | St. Albans | 2 | 2 | Slight |
| Fri 24 May 1991 | St. Albans | 2 | 3 | Slight |
| Wed 5 Jun 1991 | Barnet | 2 | 2 | Slight |
| Thu 6 Jun 1991 | St. Albans | 2 | 1 | Slight |
| Mon 10 Jun 1991 | St. Albans | 2 | 1 | Slight |
| Mon 10 Jun 1991 | St. Albans | 2 | 2 | Slight |
| Tue 11 Jun 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 12 Jun 1991 | Barnet | 2 | 1 | Slight |
| Tue 18 Jun 1991 | St. Albans | 1 | 1 | Slight |
| Wed 19 Jun 1991 | Barnet | 3 | 1 | Slight |
| Fri 21 Jun 1991 | St. Albans | 2 | 1 | Slight |
| Sat 22 Jun 1991 | Hertsmere | 1 | 1 | Serious |
| Mon 24 Jun 1991 | Hertsmere | 2 | 2 | Serious |
| Fri 28 Jun 1991 | St. Albans | 3 | 1 | Slight |
| Mon 1 Jul 1991 | St. Albans | 3 | 3 | Slight |
| Tue 2 Jul 1991 | St. Albans | 1 | 1 | Serious |
| Fri 5 Jul 1991 | St. Albans | 1 | 1 | Slight |
| Sun 7 Jul 1991 | St. Albans | 2 | 4 | Serious |
| Thu 25 Jul 1991 | St. Albans | 2 | 1 | Serious |
| Fri 26 Jul 1991 | Hertsmere | 2 | 1 | Slight |
| Fri 26 Jul 1991 | Hertsmere | 2 | 1 | Slight |
| Fri 2 Aug 1991 | Hertsmere | 2 | 1 | Slight |
| Sat 3 Aug 1991 | St. Albans | 2 | 1 | Slight |
| Wed 14 Aug 1991 | St. Albans | 4 | 4 | Slight |
| Thu 15 Aug 1991 | St. Albans | 2 | 2 | Serious |
| Sun 18 Aug 1991 | Hertsmere | 1 | 1 | Serious |
| Fri 23 Aug 1991 | St. Albans | 2 | 1 | Slight |
| Fri 23 Aug 1991 | Hertsmere | 2 | 1 | Slight |
| Sun 25 Aug 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 26 Aug 1991 | Barnet | 2 | 1 | Slight |
| Tue 27 Aug 1991 | St. Albans | 3 | 2 | Slight |
| Thu 12 Sep 1991 | St. Albans | 2 | 1 | Slight |
| Fri 13 Sep 1991 | St. Albans | 2 | 3 | Serious |
| Mon 23 Sep 1991 | St. Albans | 4 | 1 | Slight |
| Sat 28 Sep 1991 | St. Albans | 3 | 1 | Slight |
| Thu 3 Oct 1991 | St. Albans | 4 | 2 | Slight |
| Mon 7 Oct 1991 | St. Albans | 2 | 2 | Slight |
| Tue 8 Oct 1991 | St. Albans | 3 | 1 | Slight |
| Wed 9 Oct 1991 | Hertsmere | 2 | 1 | Slight |
| Fri 11 Oct 1991 | St. Albans | 3 | 1 | Slight |
| Fri 18 Oct 1991 | Hertsmere | 1 | 2 | Slight |
| Mon 21 Oct 1991 | St. Albans | 3 | 1 | Serious |
| Mon 21 Oct 1991 | St. Albans | 3 | 1 | Serious |
| Thu 24 Oct 1991 | St. Albans | 1 | 1 | Slight |
| Sat 2 Nov 1991 | Barnet | 2 | 1 | Slight |
| Sun 3 Nov 1991 | St. Albans | 1 | 1 | Slight |
| Sun 10 Nov 1991 | St. Albans | 2 | 1 | Slight |
| Sun 17 Nov 1991 | St. Albans | 1 | 1 | Serious |
| Thu 21 Nov 1991 | St. Albans | 2 | 1 | Slight |
| Fri 22 Nov 1991 | St. Albans | 3 | 3 | Slight |
| Mon 25 Nov 1991 | St. Albans | 1 | 1 | Serious |
| Wed 27 Nov 1991 | St. Albans | 2 | 2 | Serious |
| Sat 7 Dec 1991 | St. Albans | 2 | 1 | Slight |
| Tue 10 Dec 1991 | St. Albans | 4 | 2 | Slight |
| Sat 14 Dec 1991 | Dacorum | 12 | 7 | Slight |
| Sat 14 Dec 1991 | St. Albans | 3 | 1 | Slight |
| Mon 16 Dec 1991 | Hertsmere | 2 | 2 | Serious |
| Tue 24 Dec 1991 | St. Albans | 1 | 2 | Slight |
| Fri 27 Dec 1991 | St. Albans | 1 | 2 | Slight |
| Fri 27 Dec 1991 | St. Albans | 2 | 1 | Slight |
| Tue 31 Dec 1991 | Barnet | 3 | 1 | Slight |