Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 1 Jan 1991 | St. Albans | 2 | 3 | Slight |
| Mon 11 Feb 1991 | Hertsmere | 2 | 2 | Slight |
| Fri 15 Feb 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 26 Feb 1991 | Hertsmere | 2 | 1 | Slight |
| Thu 28 Feb 1991 | Hertsmere | 1 | 1 | Serious |
| Sun 3 Mar 1991 | Hertsmere | 2 | 3 | Slight |
| Fri 12 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 29 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 30 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 21 May 1991 | Hertsmere | 2 | 1 | Slight |
| Fri 7 Jun 1991 | Hertsmere | 2 | 1 | Slight |
| Thu 13 Jun 1991 | St. Albans | 2 | 1 | Slight |
| Thu 13 Jun 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 25 Jun 1991 | St. Albans | 1 | 2 | Slight |
| Tue 16 Jul 1991 | Hertsmere | 2 | 2 | Serious |
| Sat 20 Jul 1991 | St. Albans | 1 | 1 | Slight |
| Wed 24 Jul 1991 | Hertsmere | 2 | 2 | Slight |
| Sat 27 Jul 1991 | Hertsmere | 2 | 2 | Slight |
| Mon 29 Jul 1991 | Hertsmere | 2 | 1 | Serious |
| Tue 30 Jul 1991 | Hertsmere | 2 | 2 | Fatal |
| Mon 12 Aug 1991 | Hertsmere | 2 | 1 | Slight |
| Sun 1 Sep 1991 | Hertsmere | 2 | 2 | Serious |
| Mon 9 Sep 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 23 Sep 1991 | St. Albans | 2 | 1 | Slight |
| Mon 23 Sep 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 24 Sep 1991 | Hertsmere | 2 | 1 | Slight |
| Sat 28 Sep 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 16 Oct 1991 | Hertsmere | 2 | 2 | Slight |
| Wed 23 Oct 1991 | Hertsmere | 2 | 1 | Slight |
| Thu 31 Oct 1991 | St. Albans | 2 | 1 | Slight |
| Fri 8 Nov 1991 | Hertsmere | 1 | 1 | Slight |
| Sun 10 Nov 1991 | Hertsmere | 1 | 1 | Slight |
| Mon 18 Nov 1991 | Hertsmere | 2 | 1 | Slight |
| Wed 20 Nov 1991 | Hertsmere | 2 | 1 | Slight |
| Tue 26 Nov 1991 | Hertsmere | 1 | 1 | Slight |
| Thu 5 Dec 1991 | Hertsmere | 2 | 2 | Serious |
| Tue 24 Dec 1991 | Hertsmere | 3 | 2 | Slight |
| Sun 29 Dec 1991 | St. Albans | 1 | 1 | Fatal |