Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 4 Jan 1989 | Hertsmere | 2 | 1 | Slight |
| Mon 23 Jan 1989 | Hertsmere | 1 | 1 | Slight |
| Sat 28 Jan 1989 | Hertsmere | 2 | 1 | Slight |
| Tue 21 Mar 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 22 Mar 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 7 Apr 1989 | Hertsmere | 1 | 1 | Slight |
| Thu 27 Apr 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 10 May 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 12 May 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 15 May 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 26 May 1989 | Hertsmere | 3 | 1 | Slight |
| Wed 31 May 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 31 May 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 2 Jun 1989 | Hertsmere | 1 | 1 | Slight |
| Sat 10 Jun 1989 | Hertsmere | 2 | 1 | Slight |
| Sat 10 Jun 1989 | Hertsmere | 2 | 1 | Slight |
| Sun 18 Jun 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 5 Jul 1989 | Hertsmere | 2 | 1 | Slight |
| Tue 18 Jul 1989 | Hertsmere | 2 | 1 | Slight |
| Tue 25 Jul 1989 | Hertsmere | 2 | 1 | Slight |
| Wed 26 Jul 1989 | Hertsmere | 1 | 1 | Slight |
| Wed 26 Jul 1989 | Hertsmere | 2 | 2 | Slight |
| Thu 28 Sep 1989 | Hertsmere | 2 | 1 | Serious |
| Mon 2 Oct 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 6 Oct 1989 | Hertsmere | 2 | 1 | Slight |
| Mon 6 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 10 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Fri 10 Nov 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 10 Nov 1989 | Hertsmere | 2 | 1 | Slight |
| Mon 4 Dec 1989 | Hertsmere | 1 | 2 | Serious |
| Wed 6 Dec 1989 | Hertsmere | 1 | 1 | Slight |
| Fri 8 Dec 1989 | Hertsmere | 2 | 2 | Slight |
| Sat 9 Dec 1989 | Hertsmere | 1 | 1 | Slight |
| Mon 11 Dec 1989 | Hertsmere | 1 | 1 | Serious |
| Tue 12 Dec 1989 | Hertsmere | 1 | 1 | Serious |
| Mon 18 Dec 1989 | Hertsmere | 1 | 1 | Slight |