Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 17 Jan 1990 | Broxbourne | 2 | 1 | Slight |
| Sat 3 Feb 1990 | Broxbourne | 1 | 1 | Slight |
| Sat 14 Apr 1990 | East Hertfordshire | 2 | 1 | Slight |
| Fri 11 May 1990 | Broxbourne | 2 | 2 | Slight |
| Sat 12 May 1990 | East Hertfordshire | 2 | 1 | Slight |
| Thu 17 May 1990 | East Hertfordshire | 4 | 1 | Slight |
| Fri 22 Jun 1990 | East Hertfordshire | 2 | 1 | Slight |
| Mon 16 Jul 1990 | Broxbourne | 1 | 1 | Serious |
| Mon 10 Sep 1990 | East Hertfordshire | 1 | 1 | Slight |
| Tue 18 Sep 1990 | Broxbourne | 2 | 2 | Serious |
| Mon 15 Oct 1990 | Broxbourne | 1 | 1 | Slight |
| Fri 2 Nov 1990 | Broxbourne | 3 | 1 | Slight |
| Mon 26 Nov 1990 | East Hertfordshire | 1 | 1 | Slight |
| Mon 31 Dec 1990 | Broxbourne | 2 | 1 | Slight |