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