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