Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Wed 3 Jan 1990 | Middlesbrough | 1 | 1 | Slight |
| Wed 3 Jan 1990 | Middlesbrough | 1 | 1 | Slight |
| Sun 7 Jan 1990 | Hambleton | 3 | 3 | Slight |
| Sun 14 Jan 1990 | Hambleton | 2 | 2 | Serious |
| Fri 19 Jan 1990 | Middlesbrough | 3 | 1 | Slight |
| Tue 23 Jan 1990 | Middlesbrough | 2 | 1 | Serious |
| Fri 26 Jan 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 28 Jan 1990 | Hambleton | 2 | 1 | Slight |
| Thu 1 Feb 1990 | Middlesbrough | 2 | 1 | Slight |
| Fri 2 Feb 1990 | Middlesbrough | 1 | 1 | Slight |
| Sat 3 Feb 1990 | Middlesbrough | 1 | 1 | Slight |
| Mon 5 Feb 1990 | Middlesbrough | 2 | 1 | Slight |
| Wed 7 Feb 1990 | Middlesbrough | 4 | 1 | Slight |
| Wed 21 Feb 1990 | Middlesbrough | 2 | 4 | Slight |
| Wed 21 Feb 1990 | Middlesbrough | 3 | 3 | Slight |
| Fri 23 Feb 1990 | Middlesbrough | 2 | 1 | Slight |
| Mon 26 Feb 1990 | Middlesbrough | 1 | 1 | Slight |
| Wed 28 Feb 1990 | Middlesbrough | 2 | 1 | Serious |
| Fri 2 Mar 1990 | Middlesbrough | 2 | 3 | Slight |
| Fri 9 Mar 1990 | Middlesbrough | 2 | 1 | Slight |
| Fri 9 Mar 1990 | Middlesbrough | 2 | 4 | Slight |
| Sat 10 Mar 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 11 Mar 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 18 Mar 1990 | Middlesbrough | 1 | 1 | Serious |
| Sat 24 Mar 1990 | Middlesbrough | 2 | 2 | Slight |
| Thu 29 Mar 1990 | Hambleton | 2 | 2 | Slight |
| Thu 5 Apr 1990 | Middlesbrough | 1 | 1 | Slight |
| Sun 8 Apr 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 8 Apr 1990 | Hambleton | 2 | 2 | Serious |
| Tue 10 Apr 1990 | Middlesbrough | 2 | 3 | Slight |
| Mon 16 Apr 1990 | Middlesbrough | 2 | 2 | Slight |
| Wed 18 Apr 1990 | Middlesbrough | 2 | 2 | Slight |
| Fri 27 Apr 1990 | Middlesbrough | 2 | 1 | Slight |
| Mon 30 Apr 1990 | Middlesbrough | 5 | 1 | Serious |
| Sat 5 May 1990 | Middlesbrough | 3 | 1 | Slight |
| Sat 5 May 1990 | Middlesbrough | 1 | 1 | Slight |
| Tue 8 May 1990 | Middlesbrough | 1 | 1 | Slight |
| Wed 9 May 1990 | Middlesbrough | 2 | 1 | Slight |
| Wed 9 May 1990 | Hambleton | 2 | 1 | Slight |
| Thu 17 May 1990 | Middlesbrough | 2 | 2 | Slight |
| Sat 19 May 1990 | Middlesbrough | 1 | 1 | Slight |
| Sun 20 May 1990 | Middlesbrough | 2 | 2 | Slight |
| Sat 26 May 1990 | Middlesbrough | 2 | 1 | Slight |
| Sat 26 May 1990 | Middlesbrough | 1 | 1 | Serious |
| Sun 3 Jun 1990 | Middlesbrough | 1 | 1 | Slight |
| Thu 7 Jun 1990 | Middlesbrough | 2 | 1 | Slight |
| Tue 19 Jun 1990 | Middlesbrough | 2 | 1 | Slight |
| Thu 21 Jun 1990 | Middlesbrough | 3 | 1 | Slight |
| Mon 25 Jun 1990 | Middlesbrough | 2 | 1 | Slight |
| Wed 27 Jun 1990 | Middlesbrough | 2 | 1 | Slight |
| Wed 27 Jun 1990 | Middlesbrough | 2 | 1 | Slight |
| Mon 2 Jul 1990 | Middlesbrough | 1 | 1 | Serious |
| Wed 4 Jul 1990 | Hambleton | 2 | 3 | Serious |
| Thu 5 Jul 1990 | Middlesbrough | 2 | 1 | Slight |
| Sat 7 Jul 1990 | Middlesbrough | 2 | 1 | Slight |
| Thu 12 Jul 1990 | Middlesbrough | 2 | 1 | Slight |
| Fri 13 Jul 1990 | Middlesbrough | 1 | 1 | Slight |
| Mon 23 Jul 1990 | Hambleton | 3 | 1 | Slight |
| Fri 3 Aug 1990 | Hambleton | 2 | 1 | Slight |
| Tue 7 Aug 1990 | Middlesbrough | 1 | 1 | Slight |
| Fri 17 Aug 1990 | Middlesbrough | 1 | 1 | Slight |
| Fri 17 Aug 1990 | Middlesbrough | 2 | 1 | Slight |
| Tue 21 Aug 1990 | Hambleton | 2 | 1 | Slight |
| Tue 28 Aug 1990 | Middlesbrough | 2 | 1 | Serious |
| Fri 31 Aug 1990 | Hambleton | 3 | 3 | Slight |
| Sun 2 Sep 1990 | Hambleton | 2 | 1 | Serious |
| Thu 6 Sep 1990 | Middlesbrough | 1 | 1 | Slight |
| Thu 13 Sep 1990 | Middlesbrough | 2 | 4 | Serious |
| Sat 15 Sep 1990 | Middlesbrough | 2 | 1 | Serious |
| Tue 18 Sep 1990 | Middlesbrough | 2 | 1 | Slight |
| Mon 24 Sep 1990 | Middlesbrough | 2 | 1 | Slight |
| Fri 5 Oct 1990 | Hambleton | 2 | 3 | Slight |
| Mon 8 Oct 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 14 Oct 1990 | Middlesbrough | 2 | 1 | Slight |
| Thu 25 Oct 1990 | Middlesbrough | 2 | 1 | Slight |
| Sat 27 Oct 1990 | Middlesbrough | 2 | 2 | Slight |
| Mon 29 Oct 1990 | Middlesbrough | 2 | 1 | Serious |
| Thu 8 Nov 1990 | Middlesbrough | 2 | 3 | Slight |
| Fri 16 Nov 1990 | Middlesbrough | 2 | 1 | Slight |
| Sat 17 Nov 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 18 Nov 1990 | Middlesbrough | 2 | 3 | Slight |
| Wed 21 Nov 1990 | Middlesbrough | 2 | 1 | Slight |
| Fri 23 Nov 1990 | Hambleton | 4 | 2 | Slight |
| Sun 25 Nov 1990 | Middlesbrough | 3 | 1 | Slight |
| Sun 25 Nov 1990 | Middlesbrough | 2 | 2 | Serious |
| Mon 26 Nov 1990 | Hambleton | 2 | 1 | Slight |
| Sun 2 Dec 1990 | Hambleton | 2 | 1 | Serious |
| Sat 15 Dec 1990 | Middlesbrough | 2 | 1 | Slight |
| Sun 16 Dec 1990 | Middlesbrough | 2 | 1 | Slight |
| Wed 19 Dec 1990 | Middlesbrough | 2 | 1 | Slight |