Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 3 Jan 1990 | Wirral | 2 | 1 | Slight |
| Wed 3 Jan 1990 | Wirral | 2 | 1 | Slight |
| Sun 7 Jan 1990 | Wirral | 2 | 2 | Slight |
| Mon 8 Jan 1990 | Chester | 2 | 1 | Slight |
| Wed 10 Jan 1990 | Wirral | 2 | 1 | Serious |
| Fri 12 Jan 1990 | Chester | 3 | 1 | Slight |
| Sat 13 Jan 1990 | Wirral | 1 | 1 | Serious |
| Sun 14 Jan 1990 | Wirral | 2 | 1 | Slight |
| Fri 19 Jan 1990 | Ellesmere Port and Neston | 4 | 1 | Slight |
| Mon 22 Jan 1990 | Chester | 2 | 2 | Slight |
| Sun 28 Jan 1990 | Wirral | 2 | 2 | Slight |
| Sun 28 Jan 1990 | Chester | 1 | 1 | Slight |
| Mon 29 Jan 1990 | Chester | 2 | 1 | Slight |
| Tue 30 Jan 1990 | Chester | 4 | 1 | Slight |
| Fri 2 Feb 1990 | Wirral | 1 | 1 | Slight |
| Sat 10 Feb 1990 | Wirral | 2 | 1 | Slight |
| Wed 14 Feb 1990 | Wirral | 2 | 2 | Serious |
| Sat 17 Feb 1990 | Ellesmere Port and Neston | 2 | 1 | Slight |
| Tue 20 Feb 1990 | Ellesmere Port and Neston | 2 | 3 | Serious |
| Sat 24 Feb 1990 | Chester | 2 | 1 | Slight |
| Mon 26 Feb 1990 | Ellesmere Port and Neston | 1 | 1 | Slight |
| Sun 4 Mar 1990 | Chester | 1 | 1 | Slight |
| Sun 4 Mar 1990 | Chester | 2 | 1 | Slight |
| Fri 9 Mar 1990 | Wirral | 1 | 1 | Slight |
| Fri 9 Mar 1990 | Wirral | 2 | 1 | Slight |
| Sat 10 Mar 1990 | Wirral | 2 | 3 | Slight |
| Tue 13 Mar 1990 | Wirral | 2 | 2 | Slight |
| Wed 14 Mar 1990 | Ellesmere Port and Neston | 2 | 1 | Slight |
| Sun 18 Mar 1990 | Wirral | 1 | 2 | Slight |
| Wed 21 Mar 1990 | Chester | 2 | 2 | Slight |
| Thu 22 Mar 1990 | Chester | 3 | 1 | Slight |
| Tue 27 Mar 1990 | Ellesmere Port and Neston | 2 | 2 | Serious |
| Tue 27 Mar 1990 | Wirral | 1 | 1 | Slight |
| Thu 29 Mar 1990 | Chester | 1 | 1 | Slight |
| Fri 30 Mar 1990 | Wirral | 2 | 1 | Slight |
| Tue 3 Apr 1990 | Chester | 3 | 1 | Slight |
| Wed 4 Apr 1990 | Chester | 2 | 1 | Slight |
| Fri 6 Apr 1990 | Chester | 1 | 1 | Slight |
| Wed 25 Apr 1990 | Chester | 2 | 1 | Slight |
| Tue 1 May 1990 | Ellesmere Port and Neston | 2 | 1 | Slight |
| Wed 2 May 1990 | Ellesmere Port and Neston | 3 | 2 | Fatal |
| Fri 4 May 1990 | Chester | 1 | 1 | Slight |
| Sun 6 May 1990 | Ellesmere Port and Neston | 3 | 2 | Slight |
| Mon 7 May 1990 | Chester | 2 | 1 | Slight |
| Tue 22 May 1990 | Chester | 2 | 2 | Slight |
| Tue 5 Jun 1990 | Wirral | 2 | 1 | Slight |
| Sun 10 Jun 1990 | Ellesmere Port and Neston | 2 | 1 | Slight |
| Sun 17 Jun 1990 | Wirral | 1 | 1 | Slight |
| Fri 22 Jun 1990 | Chester | 1 | 1 | Slight |
| Mon 25 Jun 1990 | Chester | 2 | 1 | Slight |
| Tue 3 Jul 1990 | Chester | 2 | 1 | Slight |
| Tue 3 Jul 1990 | Ellesmere Port and Neston | 2 | 2 | Slight |
| Sat 7 Jul 1990 | Wirral | 2 | 1 | Slight |
| Tue 17 Jul 1990 | Chester | 3 | 1 | Slight |
| Wed 18 Jul 1990 | Chester | 2 | 1 | Slight |
| Sun 22 Jul 1990 | Wirral | 2 | 1 | Slight |
| Wed 25 Jul 1990 | Chester | 2 | 1 | Slight |
| Thu 26 Jul 1990 | Chester | 1 | 1 | Slight |
| Sat 28 Jul 1990 | Chester | 1 | 1 | Serious |
| Sun 29 Jul 1990 | Wirral | 1 | 1 | Slight |
| Fri 10 Aug 1990 | Ellesmere Port and Neston | 1 | 1 | Serious |
| Wed 15 Aug 1990 | Wirral | 3 | 1 | Slight |
| Sun 19 Aug 1990 | Wirral | 1 | 1 | Slight |
| Wed 22 Aug 1990 | Chester | 2 | 2 | Slight |
| Thu 23 Aug 1990 | Wirral | 1 | 1 | Slight |
| Mon 27 Aug 1990 | Wirral | 2 | 2 | Slight |
| Fri 31 Aug 1990 | Chester | 1 | 1 | Slight |
| Tue 4 Sep 1990 | Chester | 4 | 3 | Slight |
| Fri 7 Sep 1990 | Wirral | 1 | 5 | Slight |
| Fri 7 Sep 1990 | Wirral | 2 | 7 | Fatal |
| Sun 9 Sep 1990 | Ellesmere Port and Neston | 2 | 6 | Fatal |
| Thu 13 Sep 1990 | Wirral | 1 | 1 | Slight |
| Sun 16 Sep 1990 | Chester | 2 | 1 | Slight |
| Sun 16 Sep 1990 | Chester | 2 | 1 | Slight |
| Sun 23 Sep 1990 | Wirral | 1 | 1 | Slight |
| Wed 26 Sep 1990 | Wirral | 2 | 1 | Slight |
| Wed 3 Oct 1990 | Chester | 2 | 1 | Slight |
| Sat 6 Oct 1990 | Ellesmere Port and Neston | 2 | 2 | Serious |
| Sat 6 Oct 1990 | Chester | 3 | 1 | Slight |
| Mon 8 Oct 1990 | Wirral | 1 | 1 | Slight |
| Tue 9 Oct 1990 | Ellesmere Port and Neston | 2 | 2 | Serious |
| Thu 11 Oct 1990 | Wirral | 3 | 2 | Slight |
| Sat 13 Oct 1990 | Chester | 2 | 3 | Serious |
| Tue 16 Oct 1990 | Ellesmere Port and Neston | 2 | 1 | Serious |
| Fri 19 Oct 1990 | Wirral | 1 | 2 | Slight |
| Mon 22 Oct 1990 | Chester | 2 | 1 | Slight |
| Wed 24 Oct 1990 | Chester | 2 | 1 | Slight |
| Sat 27 Oct 1990 | Wirral | 2 | 1 | Slight |
| Sun 28 Oct 1990 | Chester | 2 | 1 | Slight |
| Sun 28 Oct 1990 | Chester | 2 | 1 | Slight |
| Tue 30 Oct 1990 | Ellesmere Port and Neston | 2 | 2 | Slight |
| Thu 1 Nov 1990 | Chester | 2 | 1 | Slight |
| Thu 1 Nov 1990 | Chester | 2 | 1 | Slight |
| Fri 9 Nov 1990 | Chester | 3 | 3 | Serious |
| Fri 9 Nov 1990 | Chester | 2 | 1 | Slight |
| Fri 9 Nov 1990 | Wirral | 2 | 5 | Serious |
| Thu 22 Nov 1990 | Wirral | 2 | 1 | Slight |
| Mon 26 Nov 1990 | Chester | 2 | 1 | Serious |
| Mon 26 Nov 1990 | Chester | 1 | 1 | Serious |
| Thu 29 Nov 1990 | Chester | 2 | 1 | Slight |
| Mon 3 Dec 1990 | Wirral | 1 | 1 | Slight |
| Thu 6 Dec 1990 | Wirral | 1 | 1 | Slight |
| Thu 6 Dec 1990 | Ellesmere Port and Neston | 2 | 1 | Slight |
| Fri 7 Dec 1990 | Wirral | 2 | 2 | Slight |
| Sat 15 Dec 1990 | Wirral | 2 | 1 | Slight |
| Mon 24 Dec 1990 | Wirral | 1 | 1 | Slight |
| Tue 25 Dec 1990 | Wirral | 2 | 1 | Slight |
| Thu 27 Dec 1990 | Wirral | 2 | 4 | Slight |