Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 2 Jan 1990 | Hertsmere | 1 | 1 | Fatal |
| Sat 6 Jan 1990 | Hertsmere | 2 | 1 | Slight |
| Thu 18 Jan 1990 | St. Albans | 2 | 1 | Slight |
| Tue 23 Jan 1990 | St. Albans | 2 | 2 | Slight |
| Sun 18 Feb 1990 | St. Albans | 2 | 1 | Slight |
| Fri 6 Apr 1990 | St. Albans | 1 | 1 | Serious |
| Fri 13 Apr 1990 | Hertsmere | 2 | 5 | Slight |
| Fri 20 Apr 1990 | Hertsmere | 1 | 1 | Slight |
| Fri 1 Jun 1990 | Hertsmere | 4 | 1 | Slight |
| Thu 14 Jun 1990 | Hertsmere | 2 | 1 | Slight |
| Tue 24 Jul 1990 | Hertsmere | 1 | 1 | Fatal |
| Wed 8 Aug 1990 | St. Albans | 2 | 1 | Slight |
| Wed 29 Aug 1990 | Hertsmere | 1 | 1 | Slight |
| Thu 27 Sep 1990 | St. Albans | 2 | 1 | Slight |
| Mon 1 Oct 1990 | Hertsmere | 2 | 1 | Slight |
| Wed 3 Oct 1990 | St. Albans | 2 | 1 | Slight |
| Sat 6 Oct 1990 | Hertsmere | 2 | 1 | Slight |
| Sat 10 Nov 1990 | St. Albans | 2 | 2 | Slight |
| Wed 21 Nov 1990 | Hertsmere | 4 | 1 | Slight |
| Mon 26 Nov 1990 | Hertsmere | 1 | 1 | Fatal |
| Fri 7 Dec 1990 | St. Albans | 2 | 1 | Slight |
| Sun 9 Dec 1990 | St. Albans | 2 | 1 | Slight |