Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 4 Jan 1986 | Calderdale | 1 | 1 | Slight |
| Sat 4 Jan 1986 | Calderdale | 2 | 1 | Slight |
| Wed 8 Jan 1986 | Bradford | 1 | 1 | Serious |
| Wed 8 Jan 1986 | Bradford | 1 | 1 | Slight |
| Wed 8 Jan 1986 | Bradford | 3 | 2 | Serious |
| Sat 11 Jan 1986 | Bradford | 1 | 1 | Slight |
| Mon 13 Jan 1986 | Leeds | 2 | 1 | Fatal |
| Thu 16 Jan 1986 | Leeds | 1 | 1 | Slight |
| Sun 19 Jan 1986 | Bradford | 2 | 1 | Slight |
| Tue 21 Jan 1986 | Bradford | 2 | 1 | Slight |
| Wed 22 Jan 1986 | Leeds | 1 | 1 | Fatal |
| Wed 22 Jan 1986 | Leeds | 1 | 1 | Fatal |
| Thu 23 Jan 1986 | Bradford | 1 | 1 | Serious |
| Fri 24 Jan 1986 | Bradford | 1 | 2 | Slight |
| Tue 28 Jan 1986 | Leeds | 2 | 2 | Slight |
| Tue 28 Jan 1986 | Leeds | 2 | 1 | Slight |
| Sun 2 Feb 1986 | Bradford | 1 | 1 | Slight |
| Mon 3 Feb 1986 | Leeds | 2 | 1 | Slight |
| Wed 12 Feb 1986 | Bradford | 2 | 1 | Slight |
| Sat 15 Feb 1986 | Bradford | 1 | 1 | Slight |
| Sun 16 Feb 1986 | Bradford | 2 | 1 | Slight |
| Sun 23 Feb 1986 | Bradford | 1 | 1 | Serious |
| Sun 23 Feb 1986 | Bradford | 2 | 1 | Slight |
| Mon 3 Mar 1986 | Bradford | 2 | 1 | Slight |
| Mon 3 Mar 1986 | Leeds | 2 | 1 | Slight |
| Wed 5 Mar 1986 | Leeds | 3 | 1 | Slight |
| Wed 5 Mar 1986 | Bradford | 1 | 1 | Serious |
| Fri 7 Mar 1986 | Bradford | 2 | 1 | Slight |
| Wed 12 Mar 1986 | Bradford | 2 | 1 | Slight |
| Thu 13 Mar 1986 | Bradford | 2 | 1 | Slight |
| Sat 15 Mar 1986 | Calderdale | 2 | 1 | Slight |
| Wed 19 Mar 1986 | Bradford | 1 | 1 | Slight |
| Wed 19 Mar 1986 | Leeds | 1 | 1 | Slight |
| Tue 25 Mar 1986 | Leeds | 2 | 1 | Slight |
| Wed 26 Mar 1986 | Leeds | 1 | 1 | Serious |
| Thu 3 Apr 1986 | Calderdale | 2 | 1 | Serious |
| Sun 6 Apr 1986 | Bradford | 1 | 1 | Slight |
| Tue 8 Apr 1986 | Bradford | 2 | 3 | Slight |
| Thu 10 Apr 1986 | Bradford | 1 | 1 | Slight |
| Fri 11 Apr 1986 | Bradford | 1 | 1 | Slight |
| Wed 16 Apr 1986 | Bradford | 1 | 1 | Slight |
| Fri 18 Apr 1986 | Bradford | 2 | 1 | Slight |
| Sat 19 Apr 1986 | Bradford | 2 | 1 | Slight |
| Sun 20 Apr 1986 | Leeds | 2 | 1 | Slight |
| Sun 20 Apr 1986 | Leeds | 2 | 1 | Slight |
| Fri 25 Apr 1986 | Leeds | 2 | 1 | Slight |
| Fri 25 Apr 1986 | Bradford | 4 | 1 | Slight |
| Sat 26 Apr 1986 | Bradford | 2 | 1 | Slight |
| Sun 27 Apr 1986 | Bradford | 3 | 2 | Slight |
| Wed 14 May 1986 | Bradford | 2 | 1 | Slight |
| Thu 15 May 1986 | Leeds | 2 | 1 | Slight |
| Thu 15 May 1986 | Leeds | 2 | 1 | Slight |
| Thu 15 May 1986 | Leeds | 2 | 1 | Slight |
| Sat 17 May 1986 | Bradford | 2 | 1 | Slight |
| Sat 17 May 1986 | Bradford | 2 | 1 | Slight |
| Tue 20 May 1986 | Bradford | 2 | 1 | Slight |
| Thu 22 May 1986 | Calderdale | 1 | 1 | Slight |
| Sat 24 May 1986 | Bradford | 2 | 1 | Slight |
| Wed 28 May 1986 | Bradford | 3 | 1 | Slight |
| Thu 29 May 1986 | Bradford | 1 | 1 | Serious |
| Sat 31 May 1986 | Bradford | 2 | 1 | Slight |
| Sat 31 May 1986 | Bradford | 2 | 1 | Slight |
| Fri 6 Jun 1986 | Leeds | 3 | 4 | Slight |
| Fri 6 Jun 1986 | Bradford | 2 | 1 | Slight |
| Sat 7 Jun 1986 | Calderdale | 1 | 1 | Slight |
| Sun 8 Jun 1986 | Bradford | 2 | 1 | Slight |
| Tue 10 Jun 1986 | Leeds | 1 | 1 | Serious |
| Thu 12 Jun 1986 | Leeds | 1 | 3 | Slight |
| Thu 12 Jun 1986 | Leeds | 2 | 1 | Slight |
| Thu 12 Jun 1986 | Leeds | 2 | 1 | Slight |
| Fri 13 Jun 1986 | Bradford | 1 | 1 | Fatal |
| Sat 14 Jun 1986 | Bradford | 3 | 1 | Slight |
| Wed 18 Jun 1986 | Bradford | 2 | 1 | Slight |
| Thu 19 Jun 1986 | Bradford | 2 | 2 | Serious |
| Fri 20 Jun 1986 | Leeds | 2 | 1 | Slight |
| Sat 21 Jun 1986 | Bradford | 2 | 1 | Slight |
| Sat 21 Jun 1986 | Bradford | 1 | 1 | Serious |
| Sat 21 Jun 1986 | Bradford | 3 | 2 | Slight |
| Mon 23 Jun 1986 | Bradford | 1 | 1 | Slight |
| Fri 27 Jun 1986 | Bradford | 1 | 1 | Serious |
| Wed 2 Jul 1986 | Bradford | 2 | 2 | Serious |
| Fri 4 Jul 1986 | Bradford | 2 | 5 | Serious |
| Tue 8 Jul 1986 | Bradford | 2 | 1 | Slight |
| Tue 8 Jul 1986 | Bradford | 1 | 1 | Slight |
| Thu 10 Jul 1986 | Bradford | 2 | 1 | Slight |
| Fri 11 Jul 1986 | Bradford | 2 | 1 | Slight |
| Fri 11 Jul 1986 | Bradford | 2 | 1 | Slight |
| Sun 13 Jul 1986 | Bradford | 1 | 1 | Slight |
| Sun 13 Jul 1986 | Leeds | 2 | 1 | Slight |
| Wed 16 Jul 1986 | Bradford | 1 | 1 | Fatal |
| Fri 18 Jul 1986 | Bradford | 1 | 2 | Serious |
| Fri 18 Jul 1986 | Bradford | 2 | 2 | Slight |
| Mon 21 Jul 1986 | Bradford | 2 | 1 | Serious |
| Sun 27 Jul 1986 | Leeds | 2 | 1 | Slight |
| Mon 28 Jul 1986 | Leeds | 2 | 1 | Serious |
| Mon 28 Jul 1986 | Leeds | 2 | 1 | Serious |
| Mon 28 Jul 1986 | Bradford | 1 | 1 | Slight |
| Mon 28 Jul 1986 | Bradford | 1 | 6 | Slight |
| Tue 29 Jul 1986 | Calderdale | 1 | 1 | Serious |
| Sat 2 Aug 1986 | Calderdale | 1 | 1 | Serious |
| Sun 3 Aug 1986 | Bradford | 2 | 1 | Slight |
| Mon 4 Aug 1986 | Bradford | 2 | 3 | Slight |
| Wed 6 Aug 1986 | Bradford | 2 | 1 | Slight |
| Sat 9 Aug 1986 | Bradford | 1 | 1 | Slight |
| Mon 11 Aug 1986 | Bradford | 1 | 1 | Slight |
| Sat 16 Aug 1986 | Bradford | 1 | 2 | Slight |
| Sat 16 Aug 1986 | Bradford | 1 | 1 | Slight |
| Tue 19 Aug 1986 | Bradford | 1 | 1 | Slight |
| Sun 24 Aug 1986 | Bradford | 2 | 1 | Slight |
| Wed 27 Aug 1986 | Bradford | 2 | 2 | Slight |
| Thu 28 Aug 1986 | Leeds | 1 | 1 | Slight |
| Thu 28 Aug 1986 | Leeds | 1 | 1 | Slight |
| Sat 30 Aug 1986 | Bradford | 2 | 1 | Slight |
| Tue 2 Sep 1986 | Leeds | 1 | 1 | Slight |
| Sat 6 Sep 1986 | Leeds | 3 | 2 | Slight |
| Sat 6 Sep 1986 | Leeds | 3 | 2 | Slight |
| Sat 6 Sep 1986 | Calderdale | 1 | 1 | Slight |
| Sun 7 Sep 1986 | Leeds | 1 | 1 | Slight |
| Thu 11 Sep 1986 | Bradford | 2 | 1 | Slight |
| Thu 11 Sep 1986 | Bradford | 2 | 2 | Serious |
| Tue 16 Sep 1986 | Bradford | 1 | 1 | Slight |
| Thu 18 Sep 1986 | Bradford | 1 | 1 | Slight |
| Sat 20 Sep 1986 | Leeds | 2 | 1 | Slight |
| Sat 20 Sep 1986 | Leeds | 2 | 1 | Slight |
| Sat 20 Sep 1986 | Leeds | 2 | 3 | Slight |
| Sat 20 Sep 1986 | Bradford | 2 | 1 | Fatal |
| Mon 29 Sep 1986 | Bradford | 1 | 1 | Slight |
| Tue 30 Sep 1986 | Leeds | 2 | 1 | Slight |
| Thu 2 Oct 1986 | Bradford | 2 | 1 | Slight |
| Thu 2 Oct 1986 | Bradford | 2 | 1 | Slight |
| Mon 6 Oct 1986 | Bradford | 2 | 1 | Slight |
| Mon 6 Oct 1986 | Bradford | 1 | 1 | Slight |
| Tue 7 Oct 1986 | Bradford | 4 | 2 | Slight |
| Tue 7 Oct 1986 | Bradford | 1 | 1 | Slight |
| Wed 8 Oct 1986 | Bradford | 2 | 1 | Slight |
| Sun 12 Oct 1986 | Calderdale | 1 | 1 | Slight |
| Sun 12 Oct 1986 | Bradford | 1 | 1 | Slight |
| Sat 18 Oct 1986 | Leeds | 1 | 1 | Slight |
| Sat 18 Oct 1986 | Bradford | 1 | 1 | Slight |
| Wed 22 Oct 1986 | Leeds | 3 | 2 | Slight |
| Wed 22 Oct 1986 | Bradford | 2 | 1 | Slight |
| Fri 24 Oct 1986 | Leeds | 1 | 1 | Slight |
| Sat 25 Oct 1986 | Leeds | 2 | 2 | Slight |
| Mon 27 Oct 1986 | Bradford | 1 | 1 | Slight |
| Mon 27 Oct 1986 | Bradford | 1 | 1 | Slight |
| Wed 29 Oct 1986 | Leeds | 1 | 1 | Fatal |
| Thu 30 Oct 1986 | Bradford | 1 | 1 | Slight |
| Thu 30 Oct 1986 | Leeds | 1 | 4 | Slight |
| Fri 31 Oct 1986 | Bradford | 3 | 2 | Serious |
| Wed 5 Nov 1986 | Leeds | 2 | 1 | Serious |
| Thu 6 Nov 1986 | Bradford | 2 | 2 | Serious |
| Sat 8 Nov 1986 | Leeds | 1 | 1 | Slight |
| Tue 11 Nov 1986 | Calderdale | 2 | 1 | Serious |
| Tue 11 Nov 1986 | Bradford | 2 | 1 | Slight |
| Sat 15 Nov 1986 | Bradford | 1 | 1 | Slight |
| Tue 18 Nov 1986 | Bradford | 1 | 1 | Serious |
| Tue 18 Nov 1986 | Leeds | 2 | 3 | Slight |
| Wed 19 Nov 1986 | Bradford | 1 | 1 | Slight |
| Fri 21 Nov 1986 | Bradford | 1 | 1 | Slight |
| Sun 23 Nov 1986 | Bradford | 2 | 2 | Slight |
| Tue 25 Nov 1986 | Calderdale | 1 | 1 | Serious |
| Tue 25 Nov 1986 | Bradford | 2 | 1 | Slight |
| Thu 27 Nov 1986 | Bradford | 1 | 1 | Slight |
| Fri 28 Nov 1986 | Bradford | 3 | 2 | Slight |
| Sat 29 Nov 1986 | Leeds | 1 | 1 | Slight |
| Wed 3 Dec 1986 | Leeds | 1 | 1 | Slight |
| Wed 3 Dec 1986 | Bradford | 1 | 1 | Slight |
| Wed 3 Dec 1986 | Leeds | 2 | 1 | Slight |
| Sat 6 Dec 1986 | Leeds | 1 | 1 | Slight |
| Mon 8 Dec 1986 | Bradford | 1 | 1 | Serious |
| Tue 9 Dec 1986 | Bradford | 2 | 1 | Slight |
| Sat 13 Dec 1986 | Calderdale | 1 | 1 | Serious |
| Mon 15 Dec 1986 | Bradford | 1 | 1 | Slight |
| Tue 16 Dec 1986 | Leeds | 1 | 1 | Slight |
| Tue 16 Dec 1986 | Leeds | 1 | 1 | Slight |
| Tue 16 Dec 1986 | Leeds | 1 | 1 | Slight |
| Wed 17 Dec 1986 | Leeds | 1 | 2 | Serious |
| Thu 18 Dec 1986 | Leeds | 3 | 1 | Slight |
| Thu 18 Dec 1986 | Leeds | 1 | 1 | Slight |
| Fri 19 Dec 1986 | Bradford | 2 | 1 | Slight |
| Fri 19 Dec 1986 | Leeds | 2 | 1 | Slight |
| Fri 19 Dec 1986 | Bradford | 2 | 2 | Slight |
| Sat 20 Dec 1986 | Bradford | 2 | 1 | Slight |
| Sun 21 Dec 1986 | Leeds | 2 | 1 | Slight |
| Tue 23 Dec 1986 | Bradford | 1 | 1 | Fatal |
| Wed 24 Dec 1986 | Leeds | 2 | 1 | Slight |
| Fri 26 Dec 1986 | Bradford | 2 | 1 | Slight |