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