Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Thu 5 Jan 1984 | Darlington | 2 | 1 | Slight |
| Tue 10 Jan 1984 | Teesdale | 1 | 2 | Slight |
| Thu 12 Jan 1984 | Darlington | 1 | 1 | Serious |
| Thu 19 Jan 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 28 Jan 1984 | Darlington | 1 | 1 | Slight |
| Sat 4 Feb 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 4 Feb 1984 | Teesdale | 1 | 1 | Slight |
| Mon 6 Feb 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Wed 15 Feb 1984 | Darlington | 1 | 1 | Fatal |
| Fri 17 Feb 1984 | Darlington | 1 | 1 | Slight |
| Sun 19 Feb 1984 | Stockton-on-Tees | 2 | 1 | Serious |
| Mon 20 Feb 1984 | Darlington | 1 | 1 | Slight |
| Thu 23 Feb 1984 | Teesdale | 2 | 1 | Slight |
| Fri 2 Mar 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Mon 5 Mar 1984 | Darlington | 2 | 1 | Serious |
| Thu 8 Mar 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 8 Mar 1984 | Darlington | 1 | 1 | Serious |
| Fri 9 Mar 1984 | Stockton-on-Tees | 1 | 2 | Slight |
| Sun 11 Mar 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Thu 29 Mar 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Sun 1 Apr 1984 | Darlington | 2 | 2 | Serious |
| Mon 9 Apr 1984 | Darlington | 2 | 1 | Slight |
| Mon 9 Apr 1984 | Darlington | 1 | 2 | Serious |
| Sun 15 Apr 1984 | Darlington | 2 | 3 | Serious |
| Sat 21 Apr 1984 | Darlington | 2 | 2 | Serious |
| Thu 26 Apr 1984 | Darlington | 2 | 1 | Serious |
| Fri 27 Apr 1984 | Teesdale | 2 | 1 | Slight |
| Sat 28 Apr 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Mon 30 Apr 1984 | Darlington | 1 | 1 | Serious |
| Sat 12 May 1984 | Stockton-on-Tees | 1 | 4 | Slight |
| Sat 19 May 1984 | Stockton-on-Tees | 1 | 1 | Serious |
| Wed 23 May 1984 | Darlington | 2 | 2 | Serious |
| Thu 24 May 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Tue 29 May 1984 | Teesdale | 2 | 1 | Serious |
| Sat 2 Jun 1984 | Teesdale | 1 | 1 | Slight |
| Mon 11 Jun 1984 | Teesdale | 3 | 1 | Slight |
| Wed 13 Jun 1984 | Darlington | 2 | 1 | Slight |
| Wed 13 Jun 1984 | Darlington | 2 | 1 | Slight |
| Tue 26 Jun 1984 | Teesdale | 1 | 1 | Slight |
| Fri 29 Jun 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Sun 1 Jul 1984 | Darlington | 3 | 2 | Slight |
| Fri 6 Jul 1984 | Darlington | 2 | 1 | Slight |
| Sun 8 Jul 1984 | Darlington | 2 | 1 | Slight |
| Tue 10 Jul 1984 | Darlington | 1 | 1 | Serious |
| Wed 11 Jul 1984 | Stockton-on-Tees | 1 | 3 | Serious |
| Thu 12 Jul 1984 | Stockton-on-Tees | 2 | 2 | Slight |
| Tue 17 Jul 1984 | Darlington | 2 | 2 | Slight |
| Wed 18 Jul 1984 | Darlington | 2 | 1 | Slight |
| Wed 18 Jul 1984 | Darlington | 1 | 1 | Slight |
| Thu 19 Jul 1984 | Darlington | 1 | 1 | Serious |
| Fri 20 Jul 1984 | Teesdale | 1 | 2 | Serious |
| Sun 22 Jul 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 26 Jul 1984 | Darlington | 1 | 1 | Slight |
| Fri 27 Jul 1984 | Darlington | 2 | 1 | Slight |
| Sun 29 Jul 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Sat 4 Aug 1984 | Darlington | 1 | 1 | Slight |
| Mon 6 Aug 1984 | Darlington | 2 | 1 | Serious |
| Mon 6 Aug 1984 | Darlington | 2 | 1 | Slight |
| Fri 10 Aug 1984 | Darlington | 1 | 1 | Slight |
| Tue 14 Aug 1984 | Teesdale | 1 | 1 | Slight |
| Tue 21 Aug 1984 | Darlington | 1 | 1 | Slight |
| Wed 22 Aug 1984 | Darlington | 2 | 1 | Slight |
| Fri 24 Aug 1984 | Stockton-on-Tees | 1 | 1 | Serious |
| Sun 26 Aug 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 31 Aug 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Fri 31 Aug 1984 | Darlington | 2 | 1 | Slight |
| Sat 1 Sep 1984 | Darlington | 1 | 1 | Slight |
| Sat 1 Sep 1984 | Darlington | 2 | 1 | Slight |
| Sun 2 Sep 1984 | Teesdale | 1 | 1 | Slight |
| Thu 6 Sep 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 8 Sep 1984 | Stockton-on-Tees | 1 | 2 | Slight |
| Sat 8 Sep 1984 | Darlington | 2 | 1 | Serious |
| Mon 10 Sep 1984 | Teesdale | 2 | 2 | Slight |
| Tue 11 Sep 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Fri 14 Sep 1984 | Darlington | 2 | 2 | Serious |
| Sat 6 Oct 1984 | Darlington | 1 | 1 | Slight |
| Sat 6 Oct 1984 | Darlington | 3 | 1 | Slight |
| Fri 12 Oct 1984 | Darlington | 1 | 1 | Slight |
| Tue 16 Oct 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Wed 17 Oct 1984 | Tameside | 2 | 1 | Slight |
| Fri 19 Oct 1984 | Teesdale | 5 | 1 | Slight |
| Sat 20 Oct 1984 | Stockton-on-Tees | 1 | 1 | Serious |
| Wed 24 Oct 1984 | Hambleton | 1 | 1 | Serious |
| Fri 26 Oct 1984 | Darlington | 2 | 1 | Slight |
| Mon 29 Oct 1984 | Teesdale | 2 | 1 | Serious |
| Thu 1 Nov 1984 | Darlington | 3 | 2 | Slight |
| Sat 3 Nov 1984 | Teesdale | 1 | 2 | Serious |
| Thu 8 Nov 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Thu 8 Nov 1984 | Darlington | 2 | 2 | Serious |
| Thu 8 Nov 1984 | Darlington | 1 | 1 | Slight |
| Mon 12 Nov 1984 | Darlington | 2 | 1 | Serious |
| Thu 15 Nov 1984 | Stockton-on-Tees | 1 | 1 | Slight |
| Mon 19 Nov 1984 | Darlington | 2 | 1 | Serious |
| Wed 21 Nov 1984 | Darlington | 2 | 1 | Slight |
| Fri 23 Nov 1984 | Darlington | 1 | 1 | Slight |
| Sun 2 Dec 1984 | Darlington | 2 | 3 | Serious |
| Tue 4 Dec 1984 | Teesdale | 1 | 1 | Slight |
| Fri 7 Dec 1984 | Darlington | 2 | 1 | Slight |
| Sun 9 Dec 1984 | Teesdale | 1 | 1 | Slight |
| Sun 9 Dec 1984 | Darlington | 1 | 1 | Slight |
| Fri 14 Dec 1984 | Teesdale | 2 | 1 | Slight |
| Sat 15 Dec 1984 | Stockton-on-Tees | 2 | 1 | Slight |
| Sat 15 Dec 1984 | Stockton-on-Tees | 1 | 2 | Slight |
| Mon 17 Dec 1984 | Darlington | 1 | 1 | Slight |
| Wed 26 Dec 1984 | Teesdale | 1 | 3 | Slight |
| Mon 31 Dec 1984 | Stockton-on-Tees | 2 | 4 | Serious |