Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 1 Jan 2005 | North Hertfordshire | 2 | 1 | Slight |
| Sat 8 Jan 2005 | Welwyn Hatfield | 1 | 2 | Slight |
| Sat 15 Jan 2005 | North Hertfordshire | 2 | 1 | Slight |
| Wed 19 Jan 2005 | Stevenage | 2 | 1 | Slight |
| Sat 29 Jan 2005 | Stevenage | 3 | 2 | Slight |
| Fri 4 Feb 2005 | Welwyn Hatfield | 3 | 1 | Serious |
| Sun 6 Feb 2005 | Welwyn Hatfield | 2 | 2 | Slight |
| Tue 8 Feb 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 28 Feb 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 1 Mar 2005 | Welwyn Hatfield | 1 | 1 | Slight |
| Mon 7 Mar 2005 | Welwyn Hatfield | 2 | 2 | Slight |
| Tue 8 Mar 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 16 Mar 2005 | North Hertfordshire | 2 | 5 | Serious |
| Thu 17 Mar 2005 | North Hertfordshire | 1 | 1 | Slight |
| Sun 20 Mar 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 22 Mar 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 26 Mar 2005 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 26 Apr 2005 | North Hertfordshire | 3 | 2 | Slight |
| Thu 28 Apr 2005 | Welwyn Hatfield | 3 | 3 | Slight |
| Tue 3 May 2005 | Welwyn Hatfield | 3 | 1 | Serious |
| Fri 6 May 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 11 May 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 26 May 2005 | Stevenage | 2 | 1 | Slight |
| Thu 16 Jun 2005 | Stevenage | 2 | 1 | Slight |
| Wed 6 Jul 2005 | North Hertfordshire | 2 | 1 | Slight |
| Wed 6 Jul 2005 | North Hertfordshire | 2 | 1 | Slight |
| Fri 5 Aug 2005 | Welwyn Hatfield | 2 | 2 | Slight |
| Sun 14 Aug 2005 | Stevenage | 2 | 3 | Slight |
| Sun 14 Aug 2005 | Stevenage | 2 | 3 | Slight |
| Tue 16 Aug 2005 | Stevenage | 2 | 1 | Slight |
| Wed 24 Aug 2005 | North Hertfordshire | 2 | 1 | Slight |
| Thu 8 Sep 2005 | Welwyn Hatfield | 2 | 3 | Slight |
| Sat 10 Sep 2005 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 13 Sep 2005 | Welwyn Hatfield | 2 | 2 | Slight |
| Mon 19 Sep 2005 | North Hertfordshire | 2 | 2 | Slight |
| Wed 28 Sep 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 1 Oct 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 29 Oct 2005 | Welwyn Hatfield | 2 | 2 | Serious |
| Thu 10 Nov 2005 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 3 Dec 2005 | Stevenage | 2 | 6 | Serious |
| Thu 8 Dec 2005 | Stevenage | 2 | 2 | Slight |
| Tue 13 Dec 2005 | Stevenage | 2 | 1 | Slight |
| Tue 20 Dec 2005 | Stevenage | 3 | 1 | Slight |