Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sun 18 Jan 2004 | East Hertfordshire | 2 | 2 | Slight |
| Tue 20 Jan 2004 | East Hertfordshire | 2 | 1 | Serious |
| Sun 25 Jan 2004 | East Hertfordshire | 2 | 2 | Slight |
| Sun 1 Feb 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 10 Feb 2004 | East Hertfordshire | 1 | 1 | Slight |
| Mon 23 Feb 2004 | East Hertfordshire | 3 | 1 | Slight |
| Mon 12 Apr 2004 | East Hertfordshire | 3 | 1 | Serious |
| Sat 17 Apr 2004 | Harlow | 3 | 2 | Slight |
| Sat 17 Apr 2004 | East Hertfordshire | 2 | 1 | Slight |
| Thu 22 Apr 2004 | East Hertfordshire | 2 | 2 | Slight |
| Thu 22 Apr 2004 | Harlow | 2 | 1 | Slight |
| Sun 25 Apr 2004 | East Hertfordshire | 1 | 1 | Slight |
| Sat 29 May 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 8 Jun 2004 | East Hertfordshire | 3 | 3 | Fatal |
| Sun 13 Jun 2004 | East Hertfordshire | 2 | 1 | Slight |
| Wed 23 Jun 2004 | East Hertfordshire | 2 | 1 | Slight |
| Wed 23 Jun 2004 | East Hertfordshire | 3 | 4 | Slight |
| Fri 23 Jul 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 27 Jul 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 10 Aug 2004 | East Hertfordshire | 2 | 4 | Fatal |
| Thu 12 Aug 2004 | East Hertfordshire | 2 | 2 | Slight |
| Tue 17 Aug 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 17 Aug 2004 | East Hertfordshire | 2 | 1 | Slight |
| Wed 1 Sep 2004 | East Hertfordshire | 2 | 1 | Slight |
| Tue 14 Sep 2004 | East Hertfordshire | 3 | 1 | Slight |