Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 1 Jan 1991 | Broxbourne | 2 | 2 | Serious |
| Fri 4 Jan 1991 | Welwyn Hatfield | 1 | 1 | Fatal |
| Sat 12 Jan 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Sat 12 Jan 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Sat 12 Jan 1991 | Welwyn Hatfield | 2 | 3 | Slight |
| Sun 13 Jan 1991 | Broxbourne | 1 | 2 | Fatal |
| Tue 15 Jan 1991 | Broxbourne | 2 | 1 | Slight |
| Thu 24 Jan 1991 | Broxbourne | 1 | 1 | Slight |
| Thu 7 Feb 1991 | Broxbourne | 2 | 1 | Slight |
| Tue 12 Feb 1991 | Hertsmere | 2 | 1 | Slight |
| Thu 14 Feb 1991 | Broxbourne | 2 | 1 | Slight |
| Fri 15 Feb 1991 | Broxbourne | 2 | 1 | Slight |
| Sat 16 Feb 1991 | Hertsmere | 1 | 1 | Serious |
| Mon 18 Feb 1991 | Broxbourne | 2 | 1 | Slight |
| Sat 16 Mar 1991 | Broxbourne | 2 | 1 | Slight |
| Tue 16 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 16 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 27 Apr 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Wed 15 May 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 15 May 1991 | Broxbourne | 2 | 2 | Slight |
| Sat 18 May 1991 | Broxbourne | 1 | 1 | Fatal |
| Wed 26 Jun 1991 | West Lindsey | 1 | 1 | Slight |
| Sun 30 Jun 1991 | Broxbourne | 2 | 1 | Slight |
| Thu 11 Jul 1991 | Broxbourne | 1 | 1 | Slight |
| Tue 23 Jul 1991 | Hertsmere | 2 | 1 | Slight |
| Sat 10 Aug 1991 | Broxbourne | 2 | 1 | Slight |
| Fri 23 Aug 1991 | Broxbourne | 2 | 2 | Slight |
| Tue 27 Aug 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 5 Sep 1991 | Broxbourne | 2 | 1 | Slight |
| Fri 13 Sep 1991 | Broxbourne | 2 | 2 | Slight |
| Tue 22 Oct 1991 | Broxbourne | 2 | 1 | Slight |
| Fri 25 Oct 1991 | Broxbourne | 2 | 1 | Slight |
| Tue 5 Nov 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 6 Nov 1991 | Broxbourne | 1 | 1 | Slight |
| Tue 12 Nov 1991 | Broxbourne | 3 | 2 | Slight |
| Sat 16 Nov 1991 | Hertsmere | 2 | 1 | Slight |
| Mon 18 Nov 1991 | Welwyn Hatfield | 1 | 4 | Serious |
| Sat 14 Dec 1991 | Broxbourne | 2 | 1 | Slight |
| Sat 14 Dec 1991 | Broxbourne | 2 | 1 | Slight |
| Sat 21 Dec 1991 | Broxbourne | 2 | 1 | Slight |
| Sat 21 Dec 1991 | Broxbourne | 2 | 1 | Slight |