Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 4 Jan 1989 | Stockton-on-Tees | 1 | 1 | Serious |
| Tue 10 Jan 1989 | Durham | 2 | 1 | Serious |
| Wed 18 Jan 1989 | Sedgefield | 2 | 1 | Slight |
| Thu 19 Jan 1989 | Sedgefield | 1 | 1 | Slight |
| Tue 31 Jan 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 11 Feb 1989 | Stockton-on-Tees | 2 | 4 | Slight |
| Mon 13 Feb 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 18 Feb 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Sun 19 Feb 1989 | Stockton-on-Tees | 1 | 2 | Slight |
| Tue 21 Feb 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Wed 1 Mar 1989 | Stockton-on-Tees | 2 | 2 | Slight |
| Thu 2 Mar 1989 | Durham | 2 | 1 | Slight |
| Sun 5 Mar 1989 | Stockton-on-Tees | 1 | 2 | Slight |
| Sun 5 Mar 1989 | Sedgefield | 1 | 2 | Serious |
| Wed 8 Mar 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 11 Mar 1989 | Durham | 3 | 4 | Slight |
| Tue 14 Mar 1989 | Stockton-on-Tees | 3 | 2 | Slight |
| Fri 17 Mar 1989 | Durham | 2 | 2 | Slight |
| Sun 19 Mar 1989 | Stockton-on-Tees | 1 | 1 | Fatal |
| Mon 20 Mar 1989 | Durham | 1 | 1 | Slight |
| Thu 23 Mar 1989 | Stockton-on-Tees | 5 | 1 | Slight |
| Wed 29 Mar 1989 | Stockton-on-Tees | 3 | 2 | Serious |
| Fri 7 Apr 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Mon 10 Apr 1989 | Sedgefield | 1 | 2 | Serious |
| Sat 15 Apr 1989 | Durham | 1 | 1 | Slight |
| Sat 29 Apr 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Tue 9 May 1989 | Durham | 2 | 1 | Slight |
| Tue 9 May 1989 | Stockton-on-Tees | 2 | 3 | Serious |
| Mon 15 May 1989 | Durham | 2 | 2 | Slight |
| Sat 20 May 1989 | Durham | 1 | 1 | Serious |
| Thu 1 Jun 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Wed 7 Jun 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 16 Jun 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Tue 20 Jun 1989 | Durham | 2 | 2 | Serious |
| Mon 26 Jun 1989 | Stockton-on-Tees | 2 | 3 | Slight |
| Sat 8 Jul 1989 | Stockton-on-Tees | 3 | 1 | Slight |
| Tue 11 Jul 1989 | Stockton-on-Tees | 1 | 3 | Slight |
| Sun 16 Jul 1989 | Stockton-on-Tees | 2 | 2 | Slight |
| Sun 23 Jul 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Tue 25 Jul 1989 | Sedgefield | 2 | 1 | Slight |
| Wed 26 Jul 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 14 Aug 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Wed 16 Aug 1989 | Durham | 2 | 1 | Serious |
| Thu 24 Aug 1989 | Stockton-on-Tees | 2 | 4 | Serious |
| Wed 30 Aug 1989 | Durham | 3 | 2 | Slight |
| Wed 30 Aug 1989 | Sedgefield | 1 | 2 | Serious |
| Thu 21 Sep 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 23 Sep 1989 | Sedgefield | 2 | 2 | Slight |
| Sat 23 Sep 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Sun 24 Sep 1989 | Stockton-on-Tees | 2 | 5 | Slight |
| Mon 25 Sep 1989 | Darlington | 1 | 1 | Slight |
| Fri 29 Sep 1989 | Sedgefield | 2 | 1 | Serious |
| Thu 5 Oct 1989 | Durham | 1 | 1 | Slight |
| Tue 10 Oct 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 14 Oct 1989 | Stockton-on-Tees | 3 | 1 | Slight |
| Mon 16 Oct 1989 | Sedgefield | 2 | 2 | Slight |
| Thu 19 Oct 1989 | Stockton-on-Tees | 3 | 1 | Slight |
| Fri 20 Oct 1989 | Durham | 2 | 2 | Slight |
| Sat 21 Oct 1989 | Durham | 2 | 3 | Slight |
| Fri 27 Oct 1989 | Durham | 1 | 1 | Slight |
| Tue 31 Oct 1989 | Sedgefield | 1 | 1 | Slight |
| Tue 31 Oct 1989 | Stockton-on-Tees | 4 | 2 | Slight |
| Fri 3 Nov 1989 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 6 Nov 1989 | Durham | 3 | 2 | Serious |
| Wed 8 Nov 1989 | Durham | 2 | 1 | Slight |
| Wed 8 Nov 1989 | Durham | 1 | 1 | Slight |
| Thu 23 Nov 1989 | Stockton-on-Tees | 1 | 1 | Slight |
| Mon 27 Nov 1989 | Sedgefield | 4 | 5 | Serious |
| Thu 30 Nov 1989 | Durham | 2 | 4 | Slight |
| Wed 27 Dec 1989 | Durham | 2 | 2 | Serious |