Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 15 Jan 1990 | Welwyn Hatfield | 2 | 1 | Serious |
| Sat 20 Jan 1990 | St. Albans | 2 | 2 | Serious |
| Fri 26 Jan 1990 | Welwyn Hatfield | 2 | 1 | Serious |
| Fri 16 Feb 1990 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 20 Feb 1990 | Welwyn Hatfield | 1 | 1 | Slight |
| Sun 4 Mar 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 19 Apr 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 5 Aug 1990 | Welwyn Hatfield | 1 | 1 | Slight |
| Sat 25 Aug 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 17 Oct 1990 | St. Albans | 2 | 1 | Slight |
| Mon 29 Oct 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 1 Nov 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 6 Nov 1990 | St. Albans | 2 | 2 | Slight |
| Mon 12 Nov 1990 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 13 Nov 1990 | Welwyn Hatfield | 1 | 1 | Slight |