Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 19 Jan 1999 | St. Albans | 2 | 1 | Slight |
| Wed 20 Jan 1999 | Hertsmere | 2 | 2 | Slight |
| Tue 26 Jan 1999 | Hertsmere | 1 | 1 | Slight |
| Tue 26 Jan 1999 | Hertsmere | 2 | 1 | Slight |
| Tue 2 Feb 1999 | Hertsmere | 2 | 1 | Slight |
| Thu 4 Feb 1999 | Hertsmere | 2 | 1 | Slight |
| Tue 23 Feb 1999 | Hertsmere | 1 | 1 | Slight |
| Sun 7 Mar 1999 | Hertsmere | 2 | 2 | Slight |
| Thu 1 Apr 1999 | Hertsmere | 1 | 1 | Slight |
| Thu 8 Apr 1999 | Hertsmere | 2 | 2 | Slight |
| Fri 16 Apr 1999 | St. Albans | 2 | 1 | Slight |
| Mon 26 Apr 1999 | Hertsmere | 2 | 1 | Slight |
| Tue 27 Apr 1999 | Hertsmere | 3 | 1 | Slight |
| Fri 14 May 1999 | Hertsmere | 2 | 2 | Slight |
| Thu 27 May 1999 | Hertsmere | 2 | 1 | Slight |
| Mon 31 May 1999 | Hertsmere | 1 | 1 | Slight |
| Sun 8 Aug 1999 | St. Albans | 2 | 1 | Slight |
| Sun 8 Aug 1999 | St. Albans | 2 | 1 | Slight |
| Mon 9 Aug 1999 | Hertsmere | 2 | 1 | Slight |
| Mon 16 Aug 1999 | Hertsmere | 5 | 1 | Slight |
| Tue 14 Sep 1999 | St. Albans | 2 | 2 | Slight |
| Thu 16 Sep 1999 | Hertsmere | 2 | 2 | Serious |
| Wed 29 Sep 1999 | St. Albans | 4 | 3 | Slight |
| Mon 4 Oct 1999 | St. Albans | 2 | 1 | Slight |
| Sat 23 Oct 1999 | St. Albans | 2 | 3 | Slight |
| Tue 2 Nov 1999 | Hertsmere | 2 | 1 | Slight |
| Wed 3 Nov 1999 | Hertsmere | 3 | 2 | Slight |
| Thu 18 Nov 1999 | St. Albans | 2 | 3 | Slight |
| Tue 23 Nov 1999 | St. Albans | 2 | 1 | Slight |
| Tue 30 Nov 1999 | Hertsmere | 2 | 1 | Slight |
| Wed 1 Dec 1999 | Hertsmere | 1 | 1 | Slight |
| Tue 7 Dec 1999 | Hertsmere | 3 | 1 | Slight |
| Mon 13 Dec 1999 | Dacorum | 2 | 1 | Slight |
| Mon 13 Dec 1999 | Dacorum | 2 | 1 | Slight |
| Wed 15 Dec 1999 | Hertsmere | 2 | 1 | Slight |