Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sun 2 Jan 2011 | Hertsmere | 2 | 2 | Slight |
| Wed 12 Jan 2011 | St. Albans | 2 | 2 | Slight |
| Tue 25 Jan 2011 | St. Albans | 2 | 1 | Slight |
| Wed 26 Jan 2011 | St. Albans | 2 | 4 | Slight |
| Tue 1 Feb 2011 | St. Albans | 2 | 1 | Slight |
| Mon 7 Feb 2011 | Hertsmere | 2 | 1 | Slight |
| Tue 15 Feb 2011 | St. Albans | 2 | 1 | Slight |
| Wed 2 Mar 2011 | St. Albans | 4 | 1 | Slight |
| Thu 10 Mar 2011 | Hertsmere | 2 | 2 | Slight |
| Tue 22 Mar 2011 | St. Albans | 2 | 1 | Slight |
| Wed 30 Mar 2011 | Dacorum | 2 | 1 | Slight |
| Wed 13 Apr 2011 | St. Albans | 2 | 1 | Slight |
| Sun 24 Apr 2011 | St. Albans | 1 | 1 | Slight |
| Mon 2 May 2011 | St. Albans | 2 | 1 | Slight |
| Wed 4 May 2011 | St. Albans | 1 | 1 | Slight |
| Wed 11 May 2011 | Hertsmere | 2 | 1 | Slight |
| Sun 15 May 2011 | St. Albans | 2 | 2 | Slight |
| Thu 19 May 2011 | St. Albans | 2 | 1 | Slight |
| Wed 25 May 2011 | Hertsmere | 2 | 2 | Slight |
| Thu 9 Jun 2011 | St. Albans | 2 | 1 | Slight |
| Thu 9 Jun 2011 | St. Albans | 2 | 2 | Serious |
| Sun 12 Jun 2011 | St. Albans | 3 | 2 | Slight |
| Mon 20 Jun 2011 | Hertsmere | 2 | 2 | Slight |
| Tue 21 Jun 2011 | Hertsmere | 2 | 1 | Slight |
| Mon 27 Jun 2011 | St. Albans | 2 | 1 | Slight |
| Tue 28 Jun 2011 | St. Albans | 2 | 1 | Slight |
| Fri 1 Jul 2011 | St. Albans | 2 | 1 | Slight |
| Mon 4 Jul 2011 | St. Albans | 1 | 1 | Slight |
| Sun 17 Jul 2011 | St. Albans | 2 | 1 | Slight |
| Mon 18 Jul 2011 | St. Albans | 2 | 2 | Slight |
| Wed 20 Jul 2011 | St. Albans | 2 | 1 | Slight |
| Thu 21 Jul 2011 | St. Albans | 2 | 1 | Slight |
| Tue 26 Jul 2011 | St. Albans | 2 | 1 | Slight |
| Fri 19 Aug 2011 | Hertsmere | 1 | 2 | Slight |
| Tue 23 Aug 2011 | Hertsmere | 1 | 1 | Serious |
| Fri 26 Aug 2011 | St. Albans | 2 | 1 | Slight |
| Wed 31 Aug 2011 | Hertsmere | 2 | 1 | Slight |
| Wed 14 Sep 2011 | St. Albans | 2 | 1 | Slight |
| Sat 17 Sep 2011 | Hertsmere | 2 | 2 | Serious |
| Sat 24 Sep 2011 | Hertsmere | 2 | 2 | Slight |
| Fri 30 Sep 2011 | Hertsmere | 1 | 1 | Slight |
| Sat 1 Oct 2011 | St. Albans | 1 | 1 | Serious |
| Mon 3 Oct 2011 | Hertsmere | 2 | 1 | Slight |
| Thu 20 Oct 2011 | Hertsmere | 1 | 2 | Slight |
| Thu 20 Oct 2011 | Hertsmere | 1 | 2 | Slight |
| Mon 24 Oct 2011 | St. Albans | 2 | 1 | Slight |
| Thu 10 Nov 2011 | St. Albans | 2 | 1 | Slight |
| Thu 17 Nov 2011 | St. Albans | 2 | 1 | Slight |
| Sat 19 Nov 2011 | St. Albans | 5 | 5 | Serious |
| Sat 19 Nov 2011 | St. Albans | 5 | 5 | Serious |
| Thu 24 Nov 2011 | St. Albans | 2 | 1 | Slight |
| Thu 24 Nov 2011 | St. Albans | 2 | 1 | Slight |
| Thu 1 Dec 2011 | St. Albans | 2 | 1 | Slight |
| Fri 16 Dec 2011 | St. Albans | 1 | 1 | Slight |
| Sat 17 Dec 2011 | Hertsmere | 2 | 2 | Slight |
| Wed 21 Dec 2011 | St. Albans | 2 | 1 | Slight |