Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 3 Jan 1980 | Teesdale | 2 | 3 | Serious |
| Wed 9 Jan 1980 | Teesdale | 2 | 1 | Slight |
| Tue 15 Jan 1980 | Stockton-on-Tees | 2 | 2 | Slight |
| Wed 16 Jan 1980 | Darlington | 3 | 1 | Slight |
| Wed 23 Jan 1980 | Darlington | 1 | 1 | Serious |
| Sat 26 Jan 1980 | Darlington | 2 | 1 | Slight |
| Fri 1 Feb 1980 | Darlington | 1 | 1 | Serious |
| Fri 1 Feb 1980 | Darlington | 2 | 1 | Slight |
| Fri 1 Feb 1980 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 2 Feb 1980 | Darlington | 2 | 1 | Slight |
| Mon 4 Feb 1980 | Teesdale | 1 | 1 | Slight |
| Wed 6 Feb 1980 | Darlington | 2 | 1 | Slight |
| Fri 8 Feb 1980 | Stockton-on-Tees | 2 | 1 | Serious |
| Sun 10 Feb 1980 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 16 Feb 1980 | Teesdale | 2 | 1 | Serious |
| Thu 6 Mar 1980 | Stockton-on-Tees | 2 | 2 | Slight |
| Fri 7 Mar 1980 | Darlington | 1 | 1 | Slight |
| Tue 11 Mar 1980 | Darlington | 2 | 1 | Slight |
| Tue 11 Mar 1980 | Teesdale | 1 | 1 | Slight |
| Mon 24 Mar 1980 | Darlington | 2 | 3 | Serious |
| Tue 25 Mar 1980 | Darlington | 1 | 1 | Slight |
| Sat 29 Mar 1980 | Darlington | 1 | 1 | Slight |
| Sat 5 Apr 1980 | Darlington | 2 | 1 | Serious |
| Thu 10 Apr 1980 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 17 Apr 1980 | Darlington | 2 | 2 | Slight |
| Sat 26 Apr 1980 | Teesdale | 1 | 4 | Fatal |
| Mon 5 May 1980 | Teesdale | 1 | 1 | Slight |
| Wed 7 May 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 8 May 1980 | Darlington | 3 | 5 | Serious |
| Sun 11 May 1980 | Teesdale | 1 | 1 | Serious |
| Tue 13 May 1980 | Darlington | 1 | 2 | Slight |
| Sat 31 May 1980 | Darlington | 2 | 1 | Serious |
| Tue 3 Jun 1980 | Darlington | 2 | 2 | Serious |
| Mon 9 Jun 1980 | Stockton-on-Tees | 3 | 1 | Slight |
| Wed 11 Jun 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Tue 24 Jun 1980 | Teesdale | 1 | 1 | Serious |
| Fri 27 Jun 1980 | Darlington | 3 | 3 | Serious |
| Sat 28 Jun 1980 | Darlington | 2 | 1 | Slight |
| Sun 29 Jun 1980 | Darlington | 1 | 3 | Serious |
| Sun 29 Jun 1980 | Stockton-on-Tees | 1 | 2 | Slight |
| Sun 29 Jun 1980 | Darlington | 2 | 1 | Slight |
| Mon 30 Jun 1980 | Darlington | 3 | 2 | Serious |
| Mon 30 Jun 1980 | Darlington | 2 | 1 | Slight |
| Mon 30 Jun 1980 | Darlington | 2 | 1 | Slight |
| Mon 30 Jun 1980 | Stockton-on-Tees | 1 | 3 | Serious |
| Sun 6 Jul 1980 | Darlington | 2 | 1 | Slight |
| Wed 9 Jul 1980 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 10 Jul 1980 | Darlington | 2 | 1 | Serious |
| Sun 13 Jul 1980 | Teesdale | 1 | 2 | Slight |
| Thu 17 Jul 1980 | Stockton-on-Tees | 2 | 2 | Slight |
| Sat 26 Jul 1980 | Darlington | 2 | 3 | Serious |
| Wed 30 Jul 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 1 Aug 1980 | Darlington | 1 | 2 | Serious |
| Mon 4 Aug 1980 | Darlington | 2 | 1 | Slight |
| Wed 6 Aug 1980 | Teesdale | 2 | 1 | Slight |
| Tue 12 Aug 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Wed 13 Aug 1980 | Teesdale | 1 | 2 | Slight |
| Thu 14 Aug 1980 | Darlington | 1 | 1 | Serious |
| Wed 20 Aug 1980 | Darlington | 1 | 1 | Slight |
| Wed 27 Aug 1980 | Darlington | 1 | 1 | Slight |
| Wed 27 Aug 1980 | Darlington | 1 | 1 | Slight |
| Fri 29 Aug 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Mon 1 Sep 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 5 Sep 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 6 Sep 1980 | Stockton-on-Tees | 2 | 2 | Serious |
| Sun 7 Sep 1980 | Darlington | 2 | 1 | Slight |
| Fri 19 Sep 1980 | Darlington | 2 | 3 | Slight |
| Sun 21 Sep 1980 | Stockton-on-Tees | 2 | 3 | Slight |
| Sat 27 Sep 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Sun 28 Sep 1980 | Darlington | 1 | 2 | Serious |
| Sun 12 Oct 1980 | Darlington | 1 | 2 | Slight |
| Mon 13 Oct 1980 | Teesdale | 2 | 2 | Fatal |
| Thu 16 Oct 1980 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 16 Oct 1980 | Darlington | 1 | 1 | Slight |
| Fri 17 Oct 1980 | Teesdale | 2 | 1 | Slight |
| Sat 18 Oct 1980 | Teesdale | 3 | 3 | Slight |
| Sat 18 Oct 1980 | Teesdale | 3 | 3 | Slight |
| Sat 18 Oct 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 31 Oct 1980 | Teesdale | 1 | 2 | Serious |
| Thu 6 Nov 1980 | Darlington | 2 | 3 | Slight |
| Fri 7 Nov 1980 | Darlington | 2 | 1 | Slight |
| Tue 11 Nov 1980 | Darlington | 2 | 1 | Slight |
| Fri 14 Nov 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 20 Nov 1980 | Darlington | 2 | 1 | Slight |
| Wed 26 Nov 1980 | Teesdale | 1 | 1 | Slight |
| Sat 29 Nov 1980 | Darlington | 1 | 1 | Slight |
| Wed 3 Dec 1980 | Darlington | 1 | 1 | Slight |
| Wed 3 Dec 1980 | Darlington | 3 | 2 | Serious |
| Thu 4 Dec 1980 | Darlington | 1 | 1 | Slight |
| Sat 13 Dec 1980 | Teesdale | 1 | 1 | Slight |
| Fri 19 Dec 1980 | Stockton-on-Tees | 2 | 2 | Slight |
| Fri 19 Dec 1980 | Stockton-on-Tees | 2 | 1 | Slight |
| Tue 23 Dec 1980 | Darlington | 1 | 1 | Serious |
| Wed 24 Dec 1980 | Darlington | 1 | 1 | Slight |
| Wed 24 Dec 1980 | Teesdale | 1 | 1 | Slight |
| Fri 26 Dec 1980 | Teesdale | 2 | 2 | Serious |