Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 1 Jan 1988 | North Hertfordshire | 2 | 3 | Serious |
| Fri 8 Jan 1988 | Stevenage | 2 | 1 | Slight |
| Mon 11 Jan 1988 | Stevenage | 2 | 1 | Slight |
| Tue 12 Jan 1988 | East Hertfordshire | 2 | 2 | Serious |
| Mon 18 Jan 1988 | Stevenage | 2 | 1 | Serious |
| Tue 19 Jan 1988 | Stevenage | 2 | 1 | Slight |
| Tue 19 Jan 1988 | Stevenage | 2 | 1 | Slight |
| Sat 20 Feb 1988 | Stevenage | 1 | 1 | Slight |
| Mon 22 Feb 1988 | North Hertfordshire | 2 | 2 | Slight |
| Thu 25 Feb 1988 | Stevenage | 2 | 1 | Fatal |
| Wed 2 Mar 1988 | Stevenage | 2 | 1 | Serious |
| Sat 5 Mar 1988 | Stevenage | 1 | 1 | Slight |
| Sat 5 Mar 1988 | East Hertfordshire | 2 | 3 | Serious |
| Mon 7 Mar 1988 | Stevenage | 2 | 1 | Slight |
| Thu 10 Mar 1988 | Stevenage | 1 | 1 | Serious |
| Sun 13 Mar 1988 | East Hertfordshire | 1 | 1 | Slight |
| Fri 18 Mar 1988 | North Hertfordshire | 2 | 1 | Slight |
| Tue 22 Mar 1988 | Stevenage | 1 | 1 | Slight |
| Tue 29 Mar 1988 | East Hertfordshire | 1 | 4 | Slight |
| Thu 31 Mar 1988 | North Hertfordshire | 1 | 1 | Serious |
| Tue 5 Apr 1988 | Stevenage | 2 | 1 | Slight |
| Sun 17 Apr 1988 | North Hertfordshire | 2 | 1 | Slight |
| Sat 23 Apr 1988 | Stevenage | 2 | 1 | Slight |
| Tue 26 Apr 1988 | Stevenage | 2 | 1 | Slight |
| Sat 30 Apr 1988 | Stevenage | 1 | 1 | Serious |
| Fri 6 May 1988 | Stevenage | 1 | 2 | Slight |
| Fri 6 May 1988 | Stevenage | 1 | 2 | Slight |
| Sat 14 May 1988 | Stevenage | 1 | 1 | Slight |
| Sat 14 May 1988 | Stevenage | 1 | 1 | Slight |
| Wed 18 May 1988 | Stevenage | 2 | 1 | Slight |
| Sat 21 May 1988 | North Hertfordshire | 2 | 1 | Slight |
| Fri 27 May 1988 | Stevenage | 2 | 1 | Serious |
| Sat 28 May 1988 | North Hertfordshire | 2 | 1 | Slight |
| Fri 3 Jun 1988 | Stevenage | 2 | 1 | Slight |
| Tue 7 Jun 1988 | North Hertfordshire | 2 | 2 | Serious |
| Fri 17 Jun 1988 | East Hertfordshire | 2 | 1 | Serious |
| Tue 21 Jun 1988 | North Hertfordshire | 2 | 1 | Slight |
| Mon 4 Jul 1988 | Stevenage | 2 | 1 | Slight |
| Tue 5 Jul 1988 | North Hertfordshire | 2 | 1 | Slight |
| Fri 15 Jul 1988 | North Hertfordshire | 2 | 1 | Slight |
| Thu 21 Jul 1988 | Stevenage | 1 | 1 | Slight |
| Mon 25 Jul 1988 | North Hertfordshire | 2 | 1 | Slight |
| Sat 30 Jul 1988 | Stevenage | 2 | 1 | Slight |
| Thu 11 Aug 1988 | North Hertfordshire | 1 | 2 | Slight |
| Thu 11 Aug 1988 | Stevenage | 1 | 1 | Slight |
| Fri 12 Aug 1988 | Stevenage | 1 | 1 | Slight |
| Sun 14 Aug 1988 | North Hertfordshire | 1 | 5 | Serious |
| Sun 14 Aug 1988 | Stevenage | 2 | 3 | Slight |
| Mon 15 Aug 1988 | Stevenage | 2 | 1 | Slight |
| Thu 18 Aug 1988 | North Hertfordshire | 2 | 1 | Serious |
| Wed 24 Aug 1988 | Stevenage | 2 | 1 | Slight |
| Wed 24 Aug 1988 | Stevenage | 1 | 1 | Slight |
| Wed 24 Aug 1988 | Stevenage | 3 | 1 | Slight |
| Wed 31 Aug 1988 | North Hertfordshire | 2 | 1 | Slight |
| Sun 4 Sep 1988 | North Hertfordshire | 1 | 1 | Slight |
| Thu 8 Sep 1988 | Stevenage | 2 | 1 | Slight |
| Fri 9 Sep 1988 | North Hertfordshire | 1 | 1 | Serious |
| Sat 10 Sep 1988 | Stevenage | 1 | 1 | Serious |
| Fri 16 Sep 1988 | Stevenage | 2 | 1 | Slight |
| Thu 22 Sep 1988 | North Hertfordshire | 2 | 1 | Slight |
| Tue 11 Oct 1988 | Nottingham | 2 | 1 | Serious |
| Tue 25 Oct 1988 | Stevenage | 1 | 1 | Slight |
| Tue 25 Oct 1988 | Stevenage | 1 | 1 | Slight |
| Tue 25 Oct 1988 | Stevenage | 2 | 1 | Slight |
| Sat 29 Oct 1988 | Stevenage | 1 | 1 | Serious |
| Fri 4 Nov 1988 | East Hertfordshire | 2 | 1 | Slight |
| Mon 7 Nov 1988 | East Hertfordshire | 1 | 2 | Serious |
| Sat 12 Nov 1988 | North Hertfordshire | 1 | 1 | Slight |
| Sat 12 Nov 1988 | Stevenage | 2 | 1 | Slight |
| Tue 15 Nov 1988 | Stevenage | 1 | 1 | Slight |
| Fri 25 Nov 1988 | Stevenage | 2 | 1 | Slight |
| Mon 28 Nov 1988 | Stevenage | 1 | 1 | Slight |
| Fri 2 Dec 1988 | North Hertfordshire | 2 | 1 | Slight |
| Thu 8 Dec 1988 | North Hertfordshire | 2 | 1 | Serious |
| Fri 9 Dec 1988 | North Hertfordshire | 2 | 2 | Serious |
| Tue 13 Dec 1988 | East Hertfordshire | 1 | 1 | Slight |
| Sat 17 Dec 1988 | East Hertfordshire | 1 | 1 | Slight |
| Sun 18 Dec 1988 | East Hertfordshire | 2 | 1 | Slight |
| Sun 18 Dec 1988 | East Hertfordshire | 1 | 1 | Slight |
| Fri 23 Dec 1988 | Stevenage | 1 | 2 | Slight |
| Fri 30 Dec 1988 | East Hertfordshire | 1 | 1 | Slight |