Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 18 Jan 2013 | North Hertfordshire | 2 | 1 | Slight |
| Sun 20 Jan 2013 | Stevenage | 1 | 1 | Slight |
| Sun 20 Jan 2013 | Stevenage | 1 | 1 | Slight |
| Wed 23 Jan 2013 | East Hertfordshire | 3 | 1 | Slight |
| Sat 2 Feb 2013 | Stevenage | 3 | 2 | Slight |
| Thu 14 Feb 2013 | Stevenage | 3 | 2 | Slight |
| Thu 21 Feb 2013 | East Hertfordshire | 2 | 1 | Slight |
| Thu 28 Feb 2013 | North Hertfordshire | 2 | 1 | Slight |
| Sun 3 Mar 2013 | Stevenage | 2 | 1 | Slight |
| Sun 3 Mar 2013 | Stevenage | 2 | 1 | Slight |
| Wed 6 Mar 2013 | Stevenage | 2 | 1 | Slight |
| Wed 6 Mar 2013 | Stevenage | 2 | 1 | Slight |
| Wed 20 Mar 2013 | Stevenage | 4 | 5 | Serious |
| Mon 25 Mar 2013 | North Hertfordshire | 2 | 3 | Serious |
| Thu 28 Mar 2013 | East Hertfordshire | 2 | 1 | Slight |
| Sun 7 Apr 2013 | East Hertfordshire | 4 | 4 | Slight |
| Tue 16 Apr 2013 | Stevenage | 2 | 1 | Slight |
| Tue 16 Apr 2013 | Stevenage | 2 | 1 | Slight |
| Tue 23 Apr 2013 | Stevenage | 2 | 1 | Serious |
| Tue 23 Apr 2013 | Stevenage | 2 | 1 | Serious |
| Thu 9 May 2013 | East Hertfordshire | 2 | 1 | Slight |
| Sat 25 May 2013 | East Hertfordshire | 2 | 1 | Slight |
| Wed 29 May 2013 | Stevenage | 1 | 1 | Slight |
| Fri 31 May 2013 | Stevenage | 2 | 1 | Slight |
| Tue 4 Jun 2013 | East Hertfordshire | 2 | 2 | Slight |
| Fri 14 Jun 2013 | East Hertfordshire | 2 | 1 | Slight |
| Sat 29 Jun 2013 | East Hertfordshire | 2 | 1 | Serious |
| Sat 6 Jul 2013 | Stevenage | 2 | 1 | Slight |
| Sun 7 Jul 2013 | Stevenage | 1 | 1 | Slight |
| Mon 15 Jul 2013 | Stevenage | 2 | 2 | Slight |
| Mon 15 Jul 2013 | Stevenage | 2 | 2 | Slight |
| Thu 25 Jul 2013 | Stevenage | 1 | 1 | Serious |
| Fri 26 Jul 2013 | Stevenage | 2 | 2 | Slight |
| Fri 2 Aug 2013 | Stevenage | 2 | 1 | Slight |
| Sun 4 Aug 2013 | North Hertfordshire | 2 | 1 | Slight |
| Fri 9 Aug 2013 | Stevenage | 2 | 1 | Slight |
| Sun 25 Aug 2013 | Stevenage | 2 | 1 | Slight |
| Sun 25 Aug 2013 | Stevenage | 2 | 1 | Slight |
| Wed 28 Aug 2013 | North Hertfordshire | 1 | 1 | Slight |
| Wed 4 Sep 2013 | Stevenage | 3 | 2 | Serious |
| Sat 14 Sep 2013 | Stevenage | 3 | 2 | Slight |
| Sat 14 Sep 2013 | Stevenage | 3 | 2 | Slight |
| Tue 17 Sep 2013 | Stevenage | 2 | 1 | Slight |
| Mon 23 Sep 2013 | Stevenage | 1 | 1 | Slight |
| Mon 23 Sep 2013 | Stevenage | 1 | 1 | Slight |
| Tue 24 Sep 2013 | North Hertfordshire | 2 | 2 | Slight |
| Wed 25 Sep 2013 | East Hertfordshire | 2 | 1 | Slight |
| Wed 25 Sep 2013 | Stevenage | 2 | 2 | Slight |
| Wed 25 Sep 2013 | Stevenage | 2 | 2 | Slight |
| Wed 25 Sep 2013 | Stevenage | 2 | 2 | Slight |
| Wed 25 Sep 2013 | Stevenage | 2 | 2 | Slight |
| Fri 27 Sep 2013 | Stevenage | 2 | 1 | Slight |
| Fri 27 Sep 2013 | Stevenage | 2 | 1 | Slight |
| Tue 8 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Tue 15 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Tue 15 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Wed 23 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Wed 23 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Sat 26 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Sun 27 Oct 2013 | Stevenage | 2 | 1 | Slight |
| Tue 26 Nov 2013 | Stevenage | 1 | 1 | Slight |
| Thu 28 Nov 2013 | East Hertfordshire | 1 | 1 | Slight |
| Thu 5 Dec 2013 | East Hertfordshire | 2 | 2 | Slight |
| Thu 5 Dec 2013 | East Hertfordshire | 2 | 2 | Slight |
| Tue 17 Dec 2013 | North Hertfordshire | 2 | 1 | Slight |
| Tue 17 Dec 2013 | Stevenage | 2 | 1 | Slight |
| Thu 19 Dec 2013 | Stevenage | 2 | 1 | Slight |
| Thu 19 Dec 2013 | North Hertfordshire | 2 | 1 | Slight |