Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 5 Jan 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 16 Jan 1991 | Welwyn Hatfield | 2 | 1 | Serious |
| Sat 23 Feb 1991 | Welwyn Hatfield | 3 | 1 | Slight |
| Tue 2 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 25 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 12 May 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 16 May 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 14 Jun 1991 | East Hertfordshire | 2 | 1 | Slight |
| Wed 26 Jun 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 18 Jul 1991 | Welwyn Hatfield | 1 | 1 | Serious |
| Sat 17 Aug 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 18 Oct 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 24 Oct 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 8 Nov 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Thu 28 Nov 1991 | Welwyn Hatfield | 1 | 4 | Slight |
| Wed 18 Dec 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 24 Dec 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Sat 28 Dec 1991 | East Hertfordshire | 2 | 3 | Slight |