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