Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 15 Jan 1980 | Welwyn Hatfield | 1 | 1 | Serious |
| Wed 12 Mar 1980 | Welwyn Hatfield | 1 | 1 | Serious |
| Wed 12 Mar 1980 | Welwyn Hatfield | 1 | 1 | Serious |
| Tue 15 Apr 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 15 Apr 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 23 Apr 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 7 May 1980 | Welwyn Hatfield | 2 | 2 | Serious |
| Wed 7 May 1980 | Welwyn Hatfield | 2 | 2 | Serious |
| Fri 9 May 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 9 May 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 21 May 1980 | Welwyn Hatfield | 3 | 1 | Serious |
| Wed 21 May 1980 | Welwyn Hatfield | 3 | 1 | Serious |
| Sat 24 May 1980 | Welwyn Hatfield | 2 | 5 | Slight |
| Sat 24 May 1980 | Welwyn Hatfield | 2 | 5 | Slight |
| Wed 25 Jun 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 25 Jun 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Mon 30 Jun 1980 | Welwyn Hatfield | 1 | 2 | Slight |
| Mon 30 Jun 1980 | Welwyn Hatfield | 1 | 2 | Slight |
| Tue 8 Jul 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 18 Jul 1980 | Welwyn Hatfield | 2 | 1 | Serious |
| Fri 18 Jul 1980 | Welwyn Hatfield | 2 | 1 | Serious |
| Tue 22 Jul 1980 | Welwyn Hatfield | 1 | 3 | Fatal |
| Fri 5 Sep 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 5 Sep 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 5 Sep 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 5 Sep 1980 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 15 Oct 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 15 Oct 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 18 Oct 1980 | Welwyn Hatfield | 1 | 1 | Serious |
| Sat 18 Oct 1980 | Welwyn Hatfield | 1 | 1 | Serious |
| Wed 12 Nov 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 12 Nov 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 16 Nov 1980 | East Hertfordshire | 2 | 1 | Slight |
| Thu 27 Nov 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 27 Nov 1980 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 11 Dec 1980 | Welwyn Hatfield | 1 | 1 | Serious |