Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 5 Jan 2000 | Watford | 2 | 2 | Slight |
| Tue 11 Jan 2000 | Watford | 2 | 2 | Serious |
| Thu 13 Jan 2000 | Watford | 3 | 1 | Slight |
| Fri 14 Jan 2000 | Barnet | 2 | 1 | Slight |
| Sat 15 Jan 2000 | Watford | 2 | 1 | Slight |
| Sat 15 Jan 2000 | Watford | 4 | 1 | Slight |
| Sat 15 Jan 2000 | Watford | 4 | 1 | Slight |
| Sat 15 Jan 2000 | Hertsmere | 1 | 1 | Serious |
| Sat 15 Jan 2000 | Hertsmere | 1 | 1 | Serious |
| Tue 18 Jan 2000 | Watford | 2 | 1 | Serious |
| Tue 18 Jan 2000 | Watford | 2 | 1 | Serious |
| Wed 19 Jan 2000 | Three Rivers | 4 | 1 | Slight |
| Thu 20 Jan 2000 | Watford | 2 | 2 | Slight |
| Tue 25 Jan 2000 | Barnet | 3 | 2 | Slight |
| Thu 27 Jan 2000 | Watford | 3 | 2 | Slight |
| Thu 27 Jan 2000 | Watford | 3 | 2 | Slight |
| Sat 29 Jan 2000 | Watford | 2 | 1 | Slight |
| Sat 29 Jan 2000 | Watford | 2 | 1 | Slight |
| Sun 30 Jan 2000 | Watford | 3 | 1 | Slight |
| Fri 11 Feb 2000 | Hertsmere | 2 | 2 | Slight |
| Sun 13 Feb 2000 | Watford | 1 | 2 | Serious |
| Tue 15 Feb 2000 | Barnet | 2 | 1 | Slight |
| Wed 16 Feb 2000 | Watford | 2 | 4 | Slight |
| Thu 17 Feb 2000 | Watford | 2 | 2 | Slight |
| Sat 26 Feb 2000 | Hertsmere | 3 | 1 | Slight |
| Sun 27 Feb 2000 | Watford | 1 | 1 | Slight |
| Mon 28 Feb 2000 | Watford | 2 | 2 | Slight |
| Tue 7 Mar 2000 | Watford | 1 | 2 | Serious |
| Thu 9 Mar 2000 | Watford | 2 | 3 | Slight |
| Thu 9 Mar 2000 | Barnet | 2 | 1 | Slight |
| Wed 22 Mar 2000 | Barnet | 1 | 1 | Slight |
| Fri 31 Mar 2000 | Watford | 2 | 2 | Slight |
| Sun 2 Apr 2000 | Watford | 1 | 2 | Slight |
| Mon 3 Apr 2000 | Watford | 2 | 2 | Slight |
| Mon 3 Apr 2000 | Barnet | 2 | 1 | Slight |
| Mon 3 Apr 2000 | Watford | 1 | 1 | Slight |
| Mon 3 Apr 2000 | Hertsmere | 2 | 2 | Serious |
| Tue 4 Apr 2000 | Watford | 2 | 1 | Slight |
| Wed 12 Apr 2000 | Watford | 2 | 1 | Slight |
| Fri 14 Apr 2000 | Watford | 3 | 7 | Serious |
| Sun 16 Apr 2000 | Watford | 2 | 1 | Serious |
| Wed 19 Apr 2000 | Hertsmere | 2 | 1 | Slight |
| Sun 23 Apr 2000 | Hertsmere | 2 | 2 | Slight |
| Wed 26 Apr 2000 | Barnet | 1 | 1 | Serious |
| Thu 27 Apr 2000 | Barnet | 2 | 1 | Slight |
| Fri 28 Apr 2000 | Hertsmere | 1 | 2 | Slight |
| Sat 29 Apr 2000 | Watford | 2 | 1 | Slight |
| Tue 2 May 2000 | Watford | 2 | 2 | Slight |
| Tue 9 May 2000 | Watford | 1 | 1 | Serious |
| Thu 11 May 2000 | Hertsmere | 3 | 2 | Slight |
| Fri 19 May 2000 | Barnet | 1 | 2 | Slight |
| Sun 21 May 2000 | Watford | 1 | 1 | Slight |
| Mon 22 May 2000 | Barnet | 1 | 1 | Slight |
| Mon 22 May 2000 | Barnet | 2 | 1 | Slight |
| Sat 27 May 2000 | Hertsmere | 1 | 1 | Slight |
| Thu 1 Jun 2000 | Barnet | 3 | 1 | Slight |
| Sat 3 Jun 2000 | Watford | 1 | 2 | Slight |
| Mon 5 Jun 2000 | Watford | 2 | 1 | Slight |
| Mon 5 Jun 2000 | Barnet | 2 | 1 | Slight |
| Tue 6 Jun 2000 | Barnet | 1 | 1 | Slight |
| Fri 9 Jun 2000 | Watford | 4 | 1 | Slight |
| Mon 12 Jun 2000 | Watford | 2 | 1 | Slight |
| Tue 13 Jun 2000 | Watford | 2 | 1 | Slight |
| Tue 13 Jun 2000 | Watford | 2 | 1 | Slight |
| Wed 14 Jun 2000 | Barnet | 2 | 1 | Slight |
| Fri 16 Jun 2000 | Barnet | 1 | 4 | Serious |
| Mon 19 Jun 2000 | Watford | 1 | 1 | Slight |
| Wed 21 Jun 2000 | Watford | 2 | 2 | Slight |
| Thu 22 Jun 2000 | Watford | 2 | 1 | Slight |
| Thu 29 Jun 2000 | Hertsmere | 1 | 1 | Serious |
| Sat 1 Jul 2000 | Watford | 2 | 1 | Slight |
| Thu 6 Jul 2000 | Watford | 2 | 1 | Slight |
| Thu 6 Jul 2000 | Barnet | 1 | 1 | Slight |
| Mon 10 Jul 2000 | Watford | 1 | 1 | Serious |
| Fri 14 Jul 2000 | Watford | 2 | 1 | Slight |
| Sat 15 Jul 2000 | Watford | 2 | 1 | Slight |
| Sat 15 Jul 2000 | Watford | 2 | 1 | Slight |
| Wed 19 Jul 2000 | Barnet | 2 | 1 | Slight |
| Thu 20 Jul 2000 | Hertsmere | 1 | 1 | Serious |
| Sat 22 Jul 2000 | Watford | 2 | 1 | Serious |
| Thu 27 Jul 2000 | Watford | 2 | 1 | Slight |
| Fri 28 Jul 2000 | Hertsmere | 1 | 4 | Slight |
| Sat 29 Jul 2000 | Watford | 2 | 1 | Slight |
| Tue 1 Aug 2000 | Watford | 2 | 1 | Serious |
| Tue 1 Aug 2000 | Watford | 2 | 1 | Serious |
| Wed 2 Aug 2000 | Hertsmere | 2 | 1 | Slight |
| Sun 13 Aug 2000 | Watford | 2 | 1 | Serious |
| Wed 16 Aug 2000 | Barnet | 2 | 1 | Slight |
| Wed 16 Aug 2000 | Watford | 2 | 1 | Slight |
| Wed 16 Aug 2000 | Watford | 2 | 1 | Slight |
| Fri 18 Aug 2000 | Barnet | 2 | 1 | Slight |
| Thu 24 Aug 2000 | Hertsmere | 2 | 1 | Slight |
| Fri 25 Aug 2000 | Watford | 2 | 1 | Slight |
| Sat 26 Aug 2000 | Barnet | 2 | 2 | Slight |
| Fri 1 Sep 2000 | Watford | 2 | 1 | Slight |
| Fri 1 Sep 2000 | Watford | 2 | 1 | Slight |
| Sat 2 Sep 2000 | Watford | 4 | 2 | Slight |
| Sun 3 Sep 2000 | Watford | 1 | 2 | Serious |
| Mon 4 Sep 2000 | Watford | 2 | 1 | Slight |
| Tue 5 Sep 2000 | Hertsmere | 3 | 1 | Slight |
| Tue 5 Sep 2000 | Hertsmere | 2 | 3 | Slight |
| Tue 5 Sep 2000 | Watford | 3 | 1 | Slight |
| Thu 7 Sep 2000 | Barnet | 2 | 1 | Slight |
| Fri 8 Sep 2000 | Barnet | 2 | 1 | Slight |
| Fri 8 Sep 2000 | Hertsmere | 3 | 1 | Slight |
| Fri 8 Sep 2000 | Watford | 3 | 1 | Slight |
| Fri 8 Sep 2000 | Watford | 3 | 1 | Slight |
| Fri 8 Sep 2000 | Hertsmere | 4 | 3 | Slight |
| Fri 8 Sep 2000 | Watford | 2 | 1 | Slight |
| Sun 10 Sep 2000 | Hertsmere | 2 | 2 | Slight |
| Tue 12 Sep 2000 | Watford | 2 | 1 | Slight |
| Sun 24 Sep 2000 | Watford | 2 | 1 | Slight |
| Sun 24 Sep 2000 | Hertsmere | 2 | 3 | Slight |
| Tue 26 Sep 2000 | Watford | 2 | 1 | Slight |
| Thu 28 Sep 2000 | Watford | 2 | 1 | Slight |
| Sat 30 Sep 2000 | Barnet | 2 | 1 | Slight |
| Fri 6 Oct 2000 | Watford | 2 | 1 | Slight |
| Sun 8 Oct 2000 | Hertsmere | 2 | 2 | Serious |
| Mon 9 Oct 2000 | Watford | 2 | 1 | Slight |
| Fri 13 Oct 2000 | Hertsmere | 3 | 1 | Slight |
| Fri 13 Oct 2000 | Watford | 2 | 1 | Slight |
| Tue 17 Oct 2000 | Hertsmere | 2 | 1 | Slight |
| Fri 20 Oct 2000 | Barnet | 2 | 1 | Slight |
| Fri 20 Oct 2000 | Watford | 2 | 1 | Slight |
| Fri 20 Oct 2000 | Hertsmere | 3 | 1 | Slight |
| Mon 23 Oct 2000 | Watford | 2 | 1 | Slight |
| Mon 23 Oct 2000 | Watford | 2 | 1 | Slight |
| Thu 26 Oct 2000 | Hertsmere | 2 | 1 | Slight |
| Tue 31 Oct 2000 | Watford | 2 | 2 | Serious |
| Wed 1 Nov 2000 | Watford | 2 | 1 | Slight |
| Wed 1 Nov 2000 | Watford | 2 | 1 | Slight |
| Thu 2 Nov 2000 | Hertsmere | 3 | 1 | Slight |
| Thu 2 Nov 2000 | Barnet | 2 | 1 | Slight |
| Mon 6 Nov 2000 | Hertsmere | 2 | 1 | Slight |
| Wed 8 Nov 2000 | Watford | 1 | 1 | Slight |
| Sun 12 Nov 2000 | Barnet | 1 | 2 | Slight |
| Tue 14 Nov 2000 | Three Rivers | 1 | 1 | Serious |
| Fri 17 Nov 2000 | Barnet | 1 | 1 | Serious |
| Sun 19 Nov 2000 | Watford | 2 | 1 | Slight |
| Tue 21 Nov 2000 | Watford | 1 | 1 | Slight |
| Fri 24 Nov 2000 | Hertsmere | 2 | 1 | Slight |
| Fri 24 Nov 2000 | Hertsmere | 1 | 1 | Slight |
| Fri 24 Nov 2000 | Hertsmere | 2 | 2 | Slight |
| Fri 1 Dec 2000 | Barnet | 3 | 4 | Slight |
| Fri 1 Dec 2000 | Watford | 2 | 1 | Slight |
| Fri 1 Dec 2000 | Watford | 2 | 1 | Slight |
| Tue 5 Dec 2000 | Watford | 2 | 1 | Slight |
| Thu 7 Dec 2000 | Hertsmere | 3 | 6 | Slight |
| Thu 7 Dec 2000 | Hertsmere | 1 | 1 | Slight |
| Thu 7 Dec 2000 | Barnet | 2 | 1 | Slight |
| Mon 11 Dec 2000 | Hertsmere | 1 | 1 | Slight |
| Sat 16 Dec 2000 | Watford | 3 | 1 | Slight |
| Thu 21 Dec 2000 | Watford | 2 | 1 | Slight |