Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 1 Jan 1985 | Teesdale | 1 | 6 | Serious |
| Tue 1 Jan 1985 | Darlington | 2 | 1 | Slight |
| Wed 16 Jan 1985 | Teesdale | 1 | 1 | Slight |
| Tue 22 Jan 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 28 Jan 1985 | Stockton-on-Tees | 1 | 2 | Slight |
| Thu 7 Feb 1985 | Darlington | 2 | 1 | Slight |
| Sat 23 Feb 1985 | Darlington | 1 | 1 | Slight |
| Sat 23 Feb 1985 | Teesdale | 1 | 3 | Serious |
| Wed 27 Feb 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 28 Feb 1985 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 9 Mar 1985 | Stockton-on-Tees | 2 | 4 | Slight |
| Sun 10 Mar 1985 | Stockton-on-Tees | 1 | 1 | Fatal |
| Mon 11 Mar 1985 | Darlington | 1 | 1 | Slight |
| Wed 20 Mar 1985 | Darlington | 2 | 1 | Serious |
| Fri 29 Mar 1985 | Stockton-on-Tees | 3 | 1 | Serious |
| Mon 1 Apr 1985 | Darlington | 2 | 1 | Slight |
| Tue 2 Apr 1985 | Darlington | 1 | 1 | Slight |
| Thu 4 Apr 1985 | Darlington | 2 | 1 | Slight |
| Fri 5 Apr 1985 | Darlington | 2 | 2 | Fatal |
| Fri 19 Apr 1985 | Stockton-on-Tees | 3 | 1 | Slight |
| Fri 3 May 1985 | Teesdale | 1 | 2 | Slight |
| Sat 18 May 1985 | Darlington | 2 | 1 | Slight |
| Mon 20 May 1985 | Darlington | 1 | 1 | Slight |
| Thu 23 May 1985 | Darlington | 1 | 1 | Slight |
| Sun 26 May 1985 | Darlington | 1 | 1 | Slight |
| Tue 28 May 1985 | Darlington | 1 | 1 | Slight |
| Thu 6 Jun 1985 | Darlington | 1 | 2 | Slight |
| Sat 8 Jun 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 8 Jun 1985 | Darlington | 4 | 1 | Slight |
| Mon 10 Jun 1985 | Darlington | 2 | 1 | Slight |
| Wed 19 Jun 1985 | Darlington | 2 | 1 | Slight |
| Fri 21 Jun 1985 | Stockton-on-Tees | 2 | 2 | Slight |
| Mon 24 Jun 1985 | Teesdale | 1 | 3 | Serious |
| Tue 25 Jun 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 27 Jun 1985 | Darlington | 1 | 1 | Slight |
| Thu 4 Jul 1985 | Darlington | 3 | 1 | Slight |
| Sat 6 Jul 1985 | Darlington | 4 | 4 | Slight |
| Thu 11 Jul 1985 | Darlington | 1 | 1 | Slight |
| Tue 16 Jul 1985 | Stockton-on-Tees | 2 | 2 | Serious |
| Thu 18 Jul 1985 | Darlington | 2 | 1 | Slight |
| Thu 25 Jul 1985 | Stockton-on-Tees | 3 | 2 | Slight |
| Thu 25 Jul 1985 | Teesdale | 3 | 3 | Serious |
| Mon 29 Jul 1985 | Darlington | 1 | 1 | Slight |
| Thu 1 Aug 1985 | Darlington | 2 | 1 | Slight |
| Tue 6 Aug 1985 | Teesdale | 2 | 16 | Fatal |
| Sat 10 Aug 1985 | Darlington | 2 | 1 | Serious |
| Sun 11 Aug 1985 | Darlington | 2 | 2 | Slight |
| Fri 16 Aug 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 16 Aug 1985 | Teesdale | 2 | 2 | Slight |
| Sat 17 Aug 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Sun 18 Aug 1985 | Darlington | 2 | 4 | Serious |
| Fri 23 Aug 1985 | Darlington | 1 | 1 | Slight |
| Fri 23 Aug 1985 | Darlington | 2 | 1 | Slight |
| Fri 23 Aug 1985 | Darlington | 3 | 2 | Slight |
| Wed 4 Sep 1985 | Darlington | 2 | 1 | Slight |
| Mon 16 Sep 1985 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 21 Sep 1985 | Darlington | 2 | 1 | Slight |
| Tue 1 Oct 1985 | Darlington | 2 | 1 | Serious |
| Tue 8 Oct 1985 | Stockton-on-Tees | 3 | 1 | Slight |
| Thu 10 Oct 1985 | Darlington | 2 | 1 | Slight |
| Mon 14 Oct 1985 | Darlington | 1 | 1 | Slight |
| Thu 17 Oct 1985 | Stockton-on-Tees | 1 | 1 | Slight |
| Sun 20 Oct 1985 | Teesdale | 2 | 1 | Slight |
| Fri 1 Nov 1985 | Darlington | 3 | 1 | Slight |
| Fri 8 Nov 1985 | Darlington | 1 | 1 | Slight |
| Mon 11 Nov 1985 | Darlington | 2 | 1 | Slight |
| Fri 15 Nov 1985 | Darlington | 2 | 1 | Slight |
| Mon 18 Nov 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Wed 20 Nov 1985 | Stockton-on-Tees | 1 | 1 | Slight |
| Wed 20 Nov 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 21 Nov 1985 | Darlington | 1 | 1 | Serious |
| Sun 24 Nov 1985 | Teesdale | 1 | 1 | Slight |
| Wed 27 Nov 1985 | Stockton-on-Tees | 2 | 2 | Slight |
| Fri 29 Nov 1985 | Darlington | 1 | 1 | Serious |
| Fri 29 Nov 1985 | Darlington | 3 | 3 | Slight |
| Sun 1 Dec 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 2 Dec 1985 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 2 Dec 1985 | Darlington | 2 | 1 | Slight |
| Tue 3 Dec 1985 | Darlington | 2 | 1 | Slight |
| Tue 3 Dec 1985 | Darlington | 1 | 1 | Slight |
| Wed 11 Dec 1985 | Teesdale | 2 | 1 | Serious |
| Sat 14 Dec 1985 | Stockton-on-Tees | 1 | 1 | Slight |
| Wed 18 Dec 1985 | Stockton-on-Tees | 1 | 2 | Serious |
| Tue 24 Dec 1985 | Teesdale | 1 | 4 | Fatal |
| Sun 29 Dec 1985 | Darlington | 1 | 1 | Slight |