Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 8 Jan 2009 | Stevenage | 1 | 1 | Slight |
| Thu 8 Jan 2009 | Stevenage | 1 | 1 | Slight |
| Thu 22 Jan 2009 | Stevenage | 2 | 1 | Slight |
| Sat 31 Jan 2009 | Welwyn Hatfield | 1 | 2 | Slight |
| Fri 6 Feb 2009 | North Hertfordshire | 1 | 1 | Slight |
| Sat 14 Feb 2009 | Welwyn Hatfield | 1 | 1 | Slight |
| Mon 2 Mar 2009 | Stevenage | 3 | 1 | Slight |
| Thu 19 Mar 2009 | Stevenage | 2 | 2 | Slight |
| Tue 24 Mar 2009 | Stevenage | 4 | 2 | Slight |
| Tue 31 Mar 2009 | North Hertfordshire | 2 | 1 | Slight |
| Tue 31 Mar 2009 | Stevenage | 2 | 2 | Slight |
| Thu 16 Apr 2009 | North Hertfordshire | 2 | 1 | Slight |
| Thu 16 Apr 2009 | North Hertfordshire | 2 | 1 | Slight |
| Thu 16 Apr 2009 | North Hertfordshire | 1 | 1 | Slight |
| Sat 18 Apr 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 29 Apr 2009 | Welwyn Hatfield | 2 | 2 | Slight |
| Fri 1 May 2009 | North Hertfordshire | 2 | 2 | Slight |
| Sat 2 May 2009 | North Hertfordshire | 2 | 1 | Slight |
| Mon 25 May 2009 | North Hertfordshire | 1 | 1 | Fatal |
| Fri 29 May 2009 | Stevenage | 2 | 1 | Serious |
| Mon 1 Jun 2009 | Welwyn Hatfield | 2 | 1 | Serious |
| Mon 8 Jun 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 30 Jun 2009 | Stevenage | 2 | 2 | Slight |
| Sun 5 Jul 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 6 Jul 2009 | Stevenage | 2 | 1 | Slight |
| Thu 23 Jul 2009 | Stevenage | 2 | 3 | Slight |
| Sat 25 Jul 2009 | North Hertfordshire | 2 | 1 | Slight |
| Thu 13 Aug 2009 | North Hertfordshire | 2 | 1 | Slight |
| Fri 14 Aug 2009 | Welwyn Hatfield | 2 | 2 | Slight |
| Tue 25 Aug 2009 | Welwyn Hatfield | 3 | 2 | Slight |
| Fri 4 Sep 2009 | Welwyn Hatfield | 1 | 1 | Slight |
| Thu 10 Sep 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 13 Sep 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 24 Sep 2009 | North Hertfordshire | 1 | 2 | Serious |
| Fri 25 Sep 2009 | Welwyn Hatfield | 3 | 2 | Slight |
| Fri 25 Sep 2009 | Welwyn Hatfield | 3 | 2 | Slight |
| Wed 7 Oct 2009 | North Hertfordshire | 3 | 1 | Slight |
| Wed 7 Oct 2009 | North Hertfordshire | 3 | 1 | Slight |
| Wed 4 Nov 2009 | North Hertfordshire | 2 | 1 | Slight |
| Mon 9 Nov 2009 | North Hertfordshire | 2 | 1 | Slight |
| Thu 12 Nov 2009 | Stevenage | 3 | 2 | Slight |
| Tue 24 Nov 2009 | Welwyn Hatfield | 2 | 2 | Slight |
| Fri 4 Dec 2009 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 9 Dec 2009 | North Hertfordshire | 2 | 1 | Slight |