Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 11 Jan 1989 | Hertsmere | 1 | 1 | Slight |
| Sat 11 Feb 1989 | Hertsmere | 2 | 1 | Slight |
| Thu 2 Mar 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 18 Mar 1989 | Hertsmere | 2 | 2 | Slight |
| Mon 20 Mar 1989 | Hertsmere | 2 | 1 | Slight |
| Thu 6 Apr 1989 | Hertsmere | 2 | 1 | Slight |
| Sun 7 May 1989 | Hertsmere | 2 | 2 | Slight |
| Sat 20 May 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 2 Jun 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 17 Jun 1989 | Hertsmere | 2 | 2 | Slight |
| Tue 11 Jul 1989 | Hertsmere | 3 | 2 | Slight |
| Sun 20 Aug 1989 | Hertsmere | 1 | 1 | Slight |
| Sun 27 Aug 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 28 Aug 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 20 Sep 1989 | Hertsmere | 2 | 1 | Slight |
| Thu 21 Sep 1989 | Hertsmere | 2 | 1 | Slight |
| Mon 16 Oct 1989 | Hertsmere | 3 | 1 | Slight |
| Sat 4 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Sun 5 Nov 1989 | Hertsmere | 3 | 2 | Slight |
| Fri 17 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 25 Nov 1989 | Hertsmere | 1 | 1 | Slight |
| Tue 28 Nov 1989 | Hertsmere | 2 | 3 | Serious |