Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 4 Jan 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 13 Jan 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 23 Jan 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 26 Jan 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 2 Feb 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 22 Feb 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 23 Feb 1990 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 27 Mar 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 9 Apr 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 19 Apr 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 5 May 1990 | Welwyn Hatfield | 2 | 4 | Serious |
| Mon 21 May 1990 | Welwyn Hatfield | 3 | 1 | Slight |
| Thu 31 May 1990 | Welwyn Hatfield | 1 | 2 | Slight |
| Fri 1 Jun 1990 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 28 Jun 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 7 Jul 1990 | Welwyn Hatfield | 1 | 1 | Serious |
| Mon 30 Jul 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 7 Aug 1990 | Welwyn Hatfield | 2 | 1 | Serious |
| Sat 25 Aug 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 18 Oct 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 2 Nov 1990 | Welwyn Hatfield | 2 | 2 | Slight |
| Wed 14 Nov 1990 | Welwyn Hatfield | 2 | 2 | Slight |
| Sun 18 Nov 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 20 Nov 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 5 Dec 1990 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 13 Dec 1990 | Welwyn Hatfield | 2 | 1 | Slight |