Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 19 Jan 1979 | East Hertfordshire | 2 | 1 | Slight |
| Sat 10 Feb 1979 | East Hertfordshire | 1 | 1 | Slight |
| Tue 13 Feb 1979 | East Hertfordshire | 2 | 1 | Slight |
| Tue 13 Feb 1979 | East Hertfordshire | 2 | 1 | Slight |
| Fri 23 Feb 1979 | East Hertfordshire | 1 | 1 | Slight |
| Sun 4 Mar 1979 | Welwyn Hatfield | 2 | 2 | Slight |
| Fri 16 Mar 1979 | East Hertfordshire | 2 | 2 | Serious |
| Mon 19 Mar 1979 | East Hertfordshire | 2 | 1 | Slight |
| Thu 22 Mar 1979 | East Hertfordshire | 1 | 1 | Slight |
| Wed 4 Apr 1979 | East Hertfordshire | 1 | 1 | Slight |
| Wed 4 Apr 1979 | East Hertfordshire | 1 | 1 | Slight |
| Sun 22 Apr 1979 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 25 Apr 1979 | East Hertfordshire | 1 | 1 | Slight |
| Wed 9 May 1979 | East Hertfordshire | 2 | 1 | Slight |
| Thu 10 May 1979 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 10 May 1979 | Welwyn Hatfield | 2 | 2 | Slight |
| Sun 13 May 1979 | Welwyn Hatfield | 1 | 2 | Slight |
| Fri 1 Jun 1979 | East Hertfordshire | 1 | 1 | Serious |
| Fri 1 Jun 1979 | East Hertfordshire | 2 | 1 | Slight |
| Fri 1 Jun 1979 | East Hertfordshire | 2 | 1 | Slight |
| Sat 2 Jun 1979 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 2 Jun 1979 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 16 Jun 1979 | East Hertfordshire | 1 | 3 | Slight |
| Sat 16 Jun 1979 | East Hertfordshire | 1 | 3 | Slight |
| Thu 21 Jun 1979 | East Hertfordshire | 2 | 1 | Serious |
| Sat 23 Jun 1979 | East Hertfordshire | 2 | 3 | Slight |
| Tue 24 Jul 1979 | Welwyn Hatfield | 1 | 1 | Serious |
| Thu 9 Aug 1979 | East Hertfordshire | 2 | 2 | Serious |
| Thu 9 Aug 1979 | East Hertfordshire | 2 | 2 | Serious |
| Fri 28 Sep 1979 | East Hertfordshire | 2 | 1 | Slight |
| Fri 28 Sep 1979 | East Hertfordshire | 2 | 1 | Slight |
| Thu 18 Oct 1979 | East Hertfordshire | 1 | 1 | Slight |
| Thu 18 Oct 1979 | East Hertfordshire | 1 | 1 | Slight |
| Thu 18 Oct 1979 | East Hertfordshire | 2 | 1 | Serious |
| Fri 26 Oct 1979 | East Hertfordshire | 1 | 1 | Slight |
| Fri 9 Nov 1979 | East Hertfordshire | 2 | 1 | Slight |
| Fri 9 Nov 1979 | East Hertfordshire | 2 | 1 | Slight |
| Sat 24 Nov 1979 | East Hertfordshire | 1 | 1 | Slight |
| Sat 1 Dec 1979 | Welwyn Hatfield | 1 | 1 | Serious |
| Tue 4 Dec 1979 | Welwyn Hatfield | 3 | 1 | Slight |
| Sat 15 Dec 1979 | East Hertfordshire | 1 | 2 | Slight |
| Sat 15 Dec 1979 | East Hertfordshire | 1 | 2 | Slight |
| Wed 19 Dec 1979 | East Hertfordshire | 1 | 1 | Serious |
| Mon 31 Dec 1979 | East Hertfordshire | 2 | 2 | Slight |
| Mon 31 Dec 1979 | East Hertfordshire | 1 | 1 | Slight |