Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 22 Jan 1987 | Welwyn Hatfield | 1 | 1 | Slight |
| Tue 3 Feb 1987 | Broxbourne | 3 | 1 | Slight |
| Thu 12 Feb 1987 | Broxbourne | 2 | 1 | Slight |
| Sun 15 Feb 1987 | Welwyn Hatfield | 2 | 2 | Serious |
| Mon 16 Feb 1987 | Broxbourne | 2 | 1 | Serious |
| Tue 17 Feb 1987 | Broxbourne | 2 | 2 | Slight |
| Fri 27 Feb 1987 | Welwyn Hatfield | 1 | 1 | Serious |
| Mon 2 Mar 1987 | Broxbourne | 1 | 1 | Serious |
| Tue 3 Mar 1987 | Broxbourne | 1 | 1 | Slight |
| Thu 5 Mar 1987 | Broxbourne | 1 | 1 | Slight |
| Thu 12 Mar 1987 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 24 Mar 1987 | Hertsmere | 1 | 1 | Slight |
| Sun 29 Mar 1987 | Broxbourne | 1 | 1 | Slight |
| Tue 31 Mar 1987 | Broxbourne | 1 | 1 | Slight |
| Fri 1 May 1987 | Hertsmere | 3 | 4 | Slight |
| Wed 13 May 1987 | Broxbourne | 2 | 2 | Slight |
| Fri 22 May 1987 | Hertsmere | 1 | 1 | Slight |
| Sat 23 May 1987 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 23 May 1987 | Broxbourne | 3 | 2 | Slight |
| Fri 29 May 1987 | Broxbourne | 2 | 1 | Slight |
| Mon 8 Jun 1987 | Welwyn Hatfield | 2 | 2 | Serious |
| Sat 13 Jun 1987 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 17 Jun 1987 | Welwyn Hatfield | 1 | 1 | Slight |
| Thu 25 Jun 1987 | Broxbourne | 2 | 3 | Slight |
| Fri 17 Jul 1987 | Welwyn Hatfield | 1 | 3 | Serious |
| Fri 17 Jul 1987 | Broxbourne | 2 | 1 | Slight |
| Wed 22 Jul 1987 | Broxbourne | 2 | 1 | Slight |
| Tue 28 Jul 1987 | Broxbourne | 2 | 1 | Serious |
| Wed 29 Jul 1987 | Broxbourne | 2 | 1 | Slight |
| Wed 29 Jul 1987 | Hertsmere | 1 | 2 | Slight |
| Sat 8 Aug 1987 | Welwyn Hatfield | 1 | 1 | Serious |
| Sat 22 Aug 1987 | Hertsmere | 2 | 1 | Slight |
| Wed 26 Aug 1987 | Broxbourne | 2 | 1 | Serious |
| Wed 23 Sep 1987 | Hertsmere | 2 | 1 | Slight |
| Sat 10 Oct 1987 | Welwyn Hatfield | 2 | 2 | Slight |
| Tue 13 Oct 1987 | Broxbourne | 3 | 1 | Serious |
| Tue 27 Oct 1987 | Hertsmere | 2 | 2 | Slight |
| Sun 8 Nov 1987 | Hertsmere | 2 | 1 | Slight |
| Mon 30 Nov 1987 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 30 Nov 1987 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 4 Dec 1987 | Welwyn Hatfield | 3 | 1 | Slight |
| Wed 9 Dec 1987 | Broxbourne | 2 | 1 | Slight |
| Sun 13 Dec 1987 | Hertsmere | 3 | 1 | Slight |
| Tue 15 Dec 1987 | Hertsmere | 2 | 2 | Slight |