Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 4 Jan 1991 | St. Albans | 1 | 1 | Slight |
| Thu 10 Jan 1991 | St. Albans | 2 | 1 | Slight |
| Mon 4 Mar 1991 | St. Albans | 3 | 6 | Slight |
| Fri 15 Mar 1991 | St. Albans | 3 | 2 | Slight |
| Sat 16 Mar 1991 | St. Albans | 2 | 1 | Slight |
| Wed 3 Apr 1991 | North Hertfordshire | 2 | 1 | Serious |
| Tue 16 Apr 1991 | North Hertfordshire | 1 | 1 | Serious |
| Wed 17 Apr 1991 | St. Albans | 1 | 1 | Slight |
| Fri 19 Apr 1991 | St. Albans | 3 | 3 | Serious |
| Sat 20 Apr 1991 | St. Albans | 2 | 1 | Slight |
| Thu 25 Apr 1991 | St. Albans | 3 | 1 | Serious |
| Wed 1 May 1991 | St. Albans | 2 | 1 | Slight |
| Wed 1 May 1991 | St. Albans | 2 | 1 | Slight |
| Sun 2 Jun 1991 | St. Albans | 1 | 1 | Slight |
| Thu 13 Jun 1991 | St. Albans | 1 | 1 | Slight |
| Mon 1 Jul 1991 | St. Albans | 2 | 1 | Slight |
| Fri 5 Jul 1991 | St. Albans | 2 | 2 | Slight |
| Wed 17 Jul 1991 | St. Albans | 1 | 1 | Slight |
| Fri 19 Jul 1991 | St. Albans | 2 | 1 | Slight |
| Sun 21 Jul 1991 | North Hertfordshire | 4 | 3 | Serious |
| Wed 31 Jul 1991 | North Hertfordshire | 1 | 1 | Slight |
| Sat 31 Aug 1991 | St. Albans | 2 | 1 | Slight |
| Mon 16 Sep 1991 | St. Albans | 2 | 2 | Slight |
| Tue 17 Sep 1991 | St. Albans | 2 | 1 | Slight |
| Mon 23 Sep 1991 | St. Albans | 2 | 1 | Slight |
| Tue 15 Oct 1991 | St. Albans | 3 | 1 | Serious |
| Mon 28 Oct 1991 | North Hertfordshire | 2 | 1 | Serious |
| Sun 17 Nov 1991 | St. Albans | 1 | 1 | Serious |
| Thu 21 Nov 1991 | St. Albans | 2 | 1 | Serious |
| Sun 24 Nov 1991 | St. Albans | 3 | 1 | Slight |
| Sun 1 Dec 1991 | North Hertfordshire | 3 | 2 | Slight |
| Mon 16 Dec 1991 | St. Albans | 2 | 1 | Slight |
| Tue 31 Dec 1991 | St. Albans | 2 | 3 | Slight |