Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 1 Jan 1999 | East Hertfordshire | 1 | 1 | Fatal |
| Fri 8 Jan 1999 | East Hertfordshire | 3 | 1 | Slight |
| Tue 2 Feb 1999 | East Hertfordshire | 4 | 1 | Slight |
| Mon 15 Feb 1999 | Harlow | 3 | 1 | Slight |
| Mon 22 Feb 1999 | East Hertfordshire | 2 | 1 | Slight |
| Wed 24 Feb 1999 | East Hertfordshire | 2 | 1 | Slight |
| Fri 26 Mar 1999 | East Hertfordshire | 1 | 1 | Slight |
| Sun 11 Apr 1999 | East Hertfordshire | 1 | 2 | Serious |
| Tue 13 Apr 1999 | Harlow | 3 | 1 | Slight |
| Fri 23 Apr 1999 | East Hertfordshire | 1 | 1 | Serious |
| Wed 28 Apr 1999 | East Hertfordshire | 3 | 6 | Slight |
| Sun 2 May 1999 | East Hertfordshire | 2 | 1 | Slight |
| Mon 10 May 1999 | East Hertfordshire | 2 | 1 | Slight |
| Tue 8 Jun 1999 | East Hertfordshire | 2 | 1 | Serious |
| Tue 15 Jun 1999 | Harlow | 1 | 1 | Serious |
| Sun 27 Jun 1999 | East Hertfordshire | 2 | 3 | Slight |
| Thu 15 Jul 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sat 24 Jul 1999 | East Hertfordshire | 2 | 1 | Slight |
| Mon 9 Aug 1999 | Harlow | 2 | 2 | Slight |
| Thu 12 Aug 1999 | East Hertfordshire | 2 | 1 | Slight |
| Thu 12 Aug 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sat 18 Sep 1999 | East Hertfordshire | 2 | 2 | Slight |
| Sat 18 Sep 1999 | East Hertfordshire | 2 | 1 | Serious |
| Thu 23 Sep 1999 | East Hertfordshire | 2 | 1 | Slight |
| Wed 6 Oct 1999 | East Hertfordshire | 2 | 1 | Serious |
| Mon 11 Oct 1999 | East Hertfordshire | 2 | 1 | Slight |
| Tue 12 Oct 1999 | East Hertfordshire | 2 | 2 | Slight |
| Sat 16 Oct 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sat 23 Oct 1999 | East Hertfordshire | 2 | 2 | Slight |
| Sat 23 Oct 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sat 6 Nov 1999 | East Hertfordshire | 2 | 1 | Slight |
| Tue 9 Nov 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sat 13 Nov 1999 | East Hertfordshire | 2 | 2 | Slight |
| Mon 15 Nov 1999 | East Hertfordshire | 2 | 1 | Slight |
| Sun 28 Nov 1999 | East Hertfordshire | 1 | 1 | Slight |
| Sat 18 Dec 1999 | East Hertfordshire | 2 | 4 | Slight |
| Sat 18 Dec 1999 | East Hertfordshire | 3 | 1 | Slight |