Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sun 27 Jan 2013 | St. Albans | 1 | 1 | Slight |
| Fri 8 Mar 2013 | Hertsmere | 2 | 1 | Serious |
| Fri 8 Mar 2013 | Hertsmere | 2 | 1 | Serious |
| Sat 9 Mar 2013 | St. Albans | 1 | 1 | Slight |
| Tue 12 Mar 2013 | Hertsmere | 1 | 1 | Slight |
| Fri 22 Mar 2013 | Hertsmere | 2 | 2 | Slight |
| Sat 20 Apr 2013 | Hertsmere | 2 | 2 | Slight |
| Tue 30 Apr 2013 | Hertsmere | 1 | 1 | Slight |
| Fri 24 May 2013 | Hertsmere | 2 | 1 | Slight |
| Sun 26 May 2013 | Hertsmere | 2 | 2 | Slight |
| Mon 3 Jun 2013 | St. Albans | 2 | 1 | Slight |
| Mon 10 Jun 2013 | St. Albans | 2 | 1 | Slight |
| Mon 10 Jun 2013 | St. Albans | 2 | 1 | Slight |
| Mon 8 Jul 2013 | Hertsmere | 2 | 2 | Slight |
| Sun 14 Jul 2013 | Hertsmere | 2 | 2 | Slight |
| Fri 2 Aug 2013 | Hertsmere | 1 | 1 | Slight |
| Thu 15 Aug 2013 | Hertsmere | 1 | 1 | Serious |
| Fri 23 Aug 2013 | Hertsmere | 2 | 3 | Slight |
| Fri 30 Aug 2013 | St. Albans | 2 | 1 | Serious |
| Fri 6 Sep 2013 | St. Albans | 2 | 1 | Slight |
| Wed 11 Sep 2013 | Hertsmere | 2 | 1 | Serious |
| Fri 13 Sep 2013 | Hertsmere | 2 | 1 | Slight |
| Fri 13 Sep 2013 | Hertsmere | 2 | 1 | Slight |
| Sun 15 Sep 2013 | Hertsmere | 3 | 1 | Slight |
| Tue 1 Oct 2013 | Hertsmere | 2 | 1 | Slight |
| Fri 4 Oct 2013 | Hertsmere | 2 | 2 | Slight |
| Fri 18 Oct 2013 | Hertsmere | 1 | 1 | Slight |
| Sat 2 Nov 2013 | Hertsmere | 1 | 2 | Slight |
| Thu 12 Dec 2013 | Hertsmere | 2 | 1 | Slight |
| Fri 13 Dec 2013 | Hertsmere | 1 | 1 | Slight |
| Sun 15 Dec 2013 | St. Albans | 2 | 3 | Slight |
| Fri 20 Dec 2013 | Hertsmere | 1 | 1 | Slight |
| Sat 21 Dec 2013 | Hertsmere | 2 | 1 | Slight |
| Mon 23 Dec 2013 | Hertsmere | 1 | 1 | Slight |