Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 3 Feb 2011 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 10 Feb 2011 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 15 Mar 2011 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 22 May 2011 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 9 Aug 2011 | Welwyn Hatfield | 3 | 2 | Slight |
| Fri 2 Sep 2011 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 27 Oct 2011 | Welwyn Hatfield | 3 | 4 | Serious |
| Fri 28 Oct 2011 | Welwyn Hatfield | 2 | 3 | Slight |
| Fri 28 Oct 2011 | Welwyn Hatfield | 2 | 1 | Slight |