Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Tue 1 Jan 1991 | Sedgefield | 2 | 1 | Fatal |
| Wed 2 Jan 1991 | Durham | 3 | 5 | Slight |
| Thu 3 Jan 1991 | Doncaster | 1 | 2 | Slight |
| Thu 3 Jan 1991 | Sedgefield | 7 | 5 | Slight |
| Sun 6 Jan 1991 | Doncaster | 1 | 3 | Serious |
| Mon 7 Jan 1991 | Stevenage | 2 | 1 | Slight |
| Mon 7 Jan 1991 | Chester-le-Street | 1 | 1 | Slight |
| Mon 7 Jan 1991 | Chester-le-Street | 2 | 1 | Slight |
| Tue 8 Jan 1991 | Bassetlaw | 1 | 1 | Serious |
| Wed 9 Jan 1991 | Doncaster | 5 | 4 | Slight |
| Wed 9 Jan 1991 | Sunderland | 3 | 1 | Slight |
| Wed 9 Jan 1991 | Gateshead | 3 | 1 | Slight |
| Wed 9 Jan 1991 | Darlington | 12 | 15 | Fatal |
| Sun 13 Jan 1991 | Bassetlaw | 1 | 1 | Slight |
| Sun 13 Jan 1991 | Bassetlaw | 1 | 4 | Slight |
| Mon 14 Jan 1991 | Durham | 2 | 5 | Fatal |
| Wed 16 Jan 1991 | Doncaster | 3 | 2 | Slight |
| Thu 17 Jan 1991 | Doncaster | 3 | 2 | Slight |
| Thu 17 Jan 1991 | Stevenage | 4 | 1 | Slight |
| Fri 18 Jan 1991 | North Hertfordshire | 2 | 1 | Slight |
| Sun 20 Jan 1991 | Chester-le-Street | 1 | 2 | Slight |
| Tue 22 Jan 1991 | Doncaster | 2 | 1 | Slight |
| Wed 23 Jan 1991 | Durham | 3 | 1 | Slight |
| Fri 25 Jan 1991 | Darlington | 3 | 1 | Slight |
| Fri 25 Jan 1991 | Darlington | 4 | 2 | Fatal |
| Tue 29 Jan 1991 | Doncaster | 1 | 1 | Slight |
| Sun 3 Feb 1991 | Doncaster | 2 | 2 | Slight |
| Thu 7 Feb 1991 | Sedgefield | 1 | 1 | Slight |
| Fri 8 Feb 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Thu 14 Feb 1991 | Durham | 1 | 1 | Slight |
| Fri 15 Feb 1991 | North Hertfordshire | 3 | 1 | Slight |
| Sat 16 Feb 1991 | Durham | 1 | 2 | Slight |
| Sat 16 Feb 1991 | Chester-le-Street | 2 | 2 | Slight |
| Sat 16 Feb 1991 | Chester-le-Street | 2 | 2 | Slight |
| Tue 19 Feb 1991 | Chester-le-Street | 2 | 2 | Slight |
| Tue 19 Feb 1991 | Chester-le-Street | 2 | 2 | Slight |
| Wed 20 Feb 1991 | Richmondshire | 2 | 1 | Slight |
| Thu 21 Feb 1991 | Darlington | 1 | 1 | Slight |
| Thu 21 Feb 1991 | Sedgefield | 2 | 1 | Slight |
| Sun 24 Feb 1991 | Doncaster | 2 | 1 | Slight |
| Wed 27 Feb 1991 | Sunderland | 1 | 1 | Slight |
| Wed 27 Feb 1991 | Doncaster | 2 | 1 | Slight |
| Sun 3 Mar 1991 | Welwyn Hatfield | 4 | 3 | Fatal |
| Mon 4 Mar 1991 | Welwyn Hatfield | 2 | 1 | Serious |
| Fri 8 Mar 1991 | Sunderland | 1 | 1 | Slight |
| Tue 12 Mar 1991 | Chester-le-Street | 1 | 1 | Slight |
| Thu 14 Mar 1991 | Chester-le-Street | 2 | 3 | Slight |
| Sun 24 Mar 1991 | Doncaster | 1 | 1 | Slight |
| Mon 25 Mar 1991 | Stevenage | 1 | 1 | Slight |
| Thu 4 Apr 1991 | Welwyn Hatfield | 3 | 1 | Slight |
| Sun 7 Apr 1991 | Darlington | 1 | 3 | Slight |
| Mon 8 Apr 1991 | North Hertfordshire | 2 | 2 | Slight |
| Thu 11 Apr 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Mon 15 Apr 1991 | Durham | 1 | 1 | Slight |
| Wed 17 Apr 1991 | North Hertfordshire | 1 | 1 | Slight |
| Wed 17 Apr 1991 | North Hertfordshire | 2 | 2 | Slight |
| Thu 18 Apr 1991 | Hertsmere | 2 | 1 | Slight |
| Sat 20 Apr 1991 | North Hertfordshire | 2 | 1 | Slight |
| Sat 20 Apr 1991 | North Hertfordshire | 2 | 2 | Slight |
| Tue 23 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 24 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 25 Apr 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Thu 25 Apr 1991 | Durham | 2 | 1 | Slight |
| Tue 30 Apr 1991 | Sedgefield | 2 | 1 | Slight |
| Wed 1 May 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 6 May 1991 | Chester-le-Street | 1 | 1 | Slight |
| Fri 10 May 1991 | Durham | 3 | 2 | Slight |
| Fri 10 May 1991 | Durham | 3 | 2 | Slight |
| Sun 12 May 1991 | North Hertfordshire | 2 | 2 | Slight |
| Sun 12 May 1991 | Doncaster | 2 | 1 | Slight |
| Mon 13 May 1991 | Doncaster | 1 | 4 | Slight |
| Wed 15 May 1991 | Chester-le-Street | 3 | 1 | Slight |
| Wed 15 May 1991 | Chester-le-Street | 3 | 1 | Slight |
| Wed 15 May 1991 | Sunderland | 1 | 1 | Slight |
| Thu 16 May 1991 | Welwyn Hatfield | 4 | 1 | Slight |
| Fri 24 May 1991 | Doncaster | 1 | 3 | Slight |
| Fri 24 May 1991 | Durham | 2 | 1 | Slight |
| Fri 24 May 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 27 May 1991 | Darlington | 1 | 1 | Serious |
| Tue 28 May 1991 | Sedgefield | 2 | 2 | Slight |
| Sat 1 Jun 1991 | Durham | 1 | 2 | Serious |
| Sun 2 Jun 1991 | Doncaster | 1 | 1 | Slight |
| Tue 4 Jun 1991 | Sunderland | 2 | 2 | Slight |
| Tue 4 Jun 1991 | Sunderland | 2 | 2 | Slight |
| Tue 4 Jun 1991 | Welwyn Hatfield | 2 | 1 | Serious |
| Thu 6 Jun 1991 | Durham | 2 | 2 | Slight |
| Sun 9 Jun 1991 | Doncaster | 3 | 1 | Slight |
| Mon 10 Jun 1991 | Durham | 1 | 1 | Slight |
| Tue 11 Jun 1991 | Darlington | 1 | 2 | Serious |
| Tue 11 Jun 1991 | Chester-le-Street | 2 | 1 | Slight |
| Wed 12 Jun 1991 | Welwyn Hatfield | 3 | 1 | Slight |
| Fri 14 Jun 1991 | Stevenage | 2 | 1 | Slight |
| Sat 15 Jun 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 16 Jun 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Tue 18 Jun 1991 | Welwyn Hatfield | 1 | 1 | Serious |
| Tue 18 Jun 1991 | Welwyn Hatfield | 1 | 1 | Serious |
| Fri 21 Jun 1991 | Doncaster | 1 | 2 | Serious |
| Tue 25 Jun 1991 | North Hertfordshire | 2 | 1 | Slight |
| Fri 28 Jun 1991 | Durham | 2 | 4 | Slight |
| Sat 29 Jun 1991 | Doncaster | 3 | 3 | Serious |
| Mon 1 Jul 1991 | Doncaster | 2 | 2 | Slight |
| Mon 8 Jul 1991 | Chester-le-Street | 2 | 1 | Slight |
| Mon 8 Jul 1991 | North Hertfordshire | 2 | 1 | Slight |
| Fri 12 Jul 1991 | Doncaster | 3 | 1 | Slight |
| Tue 16 Jul 1991 | Durham | 1 | 1 | Slight |
| Wed 17 Jul 1991 | Durham | 1 | 1 | Slight |
| Thu 18 Jul 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Sat 20 Jul 1991 | Durham | 1 | 1 | Slight |
| Sun 21 Jul 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 21 Jul 1991 | Darlington | 1 | 3 | Slight |
| Mon 22 Jul 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 22 Jul 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 24 Jul 1991 | Doncaster | 2 | 1 | Slight |
| Thu 25 Jul 1991 | Bassetlaw | 2 | 1 | Slight |
| Fri 26 Jul 1991 | Doncaster | 5 | 1 | Slight |
| Sat 27 Jul 1991 | Stevenage | 2 | 2 | Slight |
| Sun 28 Jul 1991 | Durham | 1 | 2 | Serious |
| Mon 29 Jul 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Mon 29 Jul 1991 | Durham | 2 | 2 | Slight |
| Thu 1 Aug 1991 | Doncaster | 2 | 2 | Slight |
| Fri 2 Aug 1991 | North Hertfordshire | 2 | 1 | Slight |
| Fri 2 Aug 1991 | Doncaster | 2 | 1 | Slight |
| Thu 8 Aug 1991 | North Hertfordshire | 2 | 1 | Slight |
| Thu 8 Aug 1991 | Sedgefield | 1 | 1 | Slight |
| Sat 10 Aug 1991 | Stevenage | 2 | 2 | Slight |
| Sat 10 Aug 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 11 Aug 1991 | Bassetlaw | 2 | 3 | Slight |
| Mon 12 Aug 1991 | Chester-le-Street | 1 | 3 | Slight |
| Wed 14 Aug 1991 | Sedgefield | 2 | 2 | Slight |
| Fri 16 Aug 1991 | Darlington | 2 | 1 | Slight |
| Mon 19 Aug 1991 | Sunderland | 1 | 2 | Slight |
| Mon 19 Aug 1991 | Sunderland | 1 | 2 | Slight |
| Mon 19 Aug 1991 | Sedgefield | 2 | 1 | Slight |
| Wed 21 Aug 1991 | Sedgefield | 3 | 1 | Slight |
| Wed 21 Aug 1991 | Welwyn Hatfield | 2 | 1 | Serious |
| Thu 22 Aug 1991 | Chester-le-Street | 4 | 3 | Slight |
| Thu 22 Aug 1991 | Chester-le-Street | 1 | 1 | Slight |
| Wed 28 Aug 1991 | Gateshead | 2 | 1 | Slight |
| Wed 28 Aug 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 7 Sep 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Sat 7 Sep 1991 | Welwyn Hatfield | 4 | 2 | Slight |
| Mon 9 Sep 1991 | Doncaster | 2 | 1 | Slight |
| Mon 16 Sep 1991 | North Hertfordshire | 1 | 1 | Slight |
| Tue 17 Sep 1991 | Welwyn Hatfield | 3 | 1 | Slight |
| Thu 19 Sep 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 23 Sep 1991 | North Hertfordshire | 2 | 1 | Slight |
| Tue 24 Sep 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Wed 25 Sep 1991 | Chester-le-Street | 2 | 2 | Slight |
| Wed 25 Sep 1991 | Gateshead | 2 | 2 | Slight |
| Thu 26 Sep 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Fri 27 Sep 1991 | Chester-le-Street | 2 | 2 | Serious |
| Fri 27 Sep 1991 | North Hertfordshire | 3 | 4 | Slight |
| Tue 1 Oct 1991 | Sedgefield | 1 | 1 | Slight |
| Tue 1 Oct 1991 | Sedgefield | 1 | 1 | Slight |
| Tue 1 Oct 1991 | Stevenage | 2 | 1 | Slight |
| Wed 2 Oct 1991 | Doncaster | 1 | 1 | Slight |
| Sat 5 Oct 1991 | Gateshead | 4 | 2 | Slight |
| Sun 6 Oct 1991 | North Hertfordshire | 2 | 1 | Slight |
| Wed 9 Oct 1991 | Sunderland | 4 | 1 | Slight |
| Wed 9 Oct 1991 | Sunderland | 4 | 1 | Slight |
| Sat 12 Oct 1991 | Richmondshire | 1 | 1 | Slight |
| Sat 12 Oct 1991 | Doncaster | 1 | 1 | Slight |
| Sun 13 Oct 1991 | Doncaster | 1 | 1 | Serious |
| Sun 13 Oct 1991 | North Hertfordshire | 2 | 3 | Slight |
| Mon 14 Oct 1991 | Welwyn Hatfield | 9 | 5 | Serious |
| Mon 14 Oct 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Wed 16 Oct 1991 | Sedgefield | 2 | 1 | Serious |
| Wed 16 Oct 1991 | Welwyn Hatfield | 1 | 1 | Serious |
| Fri 18 Oct 1991 | Stevenage | 3 | 1 | Slight |
| Fri 18 Oct 1991 | North Hertfordshire | 2 | 2 | Slight |
| Sun 20 Oct 1991 | Doncaster | 1 | 1 | Slight |
| Tue 22 Oct 1991 | Sedgefield | 2 | 1 | Slight |
| Fri 25 Oct 1991 | Doncaster | 2 | 2 | Slight |
| Fri 25 Oct 1991 | Doncaster | 2 | 1 | Slight |
| Mon 28 Oct 1991 | Chester-le-Street | 2 | 1 | Slight |
| Thu 31 Oct 1991 | Stevenage | 2 | 1 | Slight |
| Fri 1 Nov 1991 | Doncaster | 3 | 1 | Slight |
| Sat 2 Nov 1991 | North Hertfordshire | 1 | 1 | Slight |
| Sun 3 Nov 1991 | Sunderland | 1 | 1 | Slight |
| Sun 3 Nov 1991 | Sedgefield | 4 | 4 | Slight |
| Mon 4 Nov 1991 | Chester-le-Street | 2 | 2 | Slight |
| Mon 4 Nov 1991 | Gateshead | 3 | 3 | Slight |
| Fri 8 Nov 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 10 Nov 1991 | Doncaster | 2 | 2 | Slight |
| Mon 11 Nov 1991 | Welwyn Hatfield | 1 | 1 | Slight |
| Mon 11 Nov 1991 | North Hertfordshire | 2 | 2 | Slight |
| Mon 11 Nov 1991 | Chester-le-Street | 2 | 1 | Slight |
| Thu 14 Nov 1991 | Durham | 2 | 3 | Slight |
| Sun 17 Nov 1991 | Doncaster | 2 | 1 | Slight |
| Thu 21 Nov 1991 | Welwyn Hatfield | 2 | 2 | Slight |
| Thu 21 Nov 1991 | Welwyn Hatfield | 1 | 1 | Serious |
| Tue 26 Nov 1991 | Sedgefield | 2 | 1 | Slight |
| Tue 26 Nov 1991 | Doncaster | 2 | 1 | Slight |
| Fri 29 Nov 1991 | Sunderland | 2 | 1 | Slight |
| Thu 5 Dec 1991 | Sedgefield | 1 | 1 | Slight |
| Fri 6 Dec 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 6 Dec 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 8 Dec 1991 | Doncaster | 2 | 1 | Slight |
| Tue 10 Dec 1991 | Doncaster | 18 | 6 | Slight |
| Tue 10 Dec 1991 | Doncaster | 3 | 2 | Slight |
| Tue 10 Dec 1991 | Doncaster | 6 | 2 | Slight |
| Sat 14 Dec 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 17 Dec 1991 | Stevenage | 2 | 1 | Slight |
| Tue 17 Dec 1991 | North Hertfordshire | 2 | 1 | Slight |
| Thu 19 Dec 1991 | Stevenage | 2 | 1 | Slight |
| Sun 22 Dec 1991 | Durham | 6 | 4 | Slight |
| Tue 24 Dec 1991 | Doncaster | 1 | 1 | Slight |
| Thu 26 Dec 1991 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 27 Dec 1991 | Sedgefield | 2 | 1 | Slight |