Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Mon 11 Jan 1999 | Vale Royal | 2 | 1 | Slight |
| Fri 15 Jan 1999 | Vale Royal | 3 | 1 | Slight |
| Tue 26 Jan 1999 | Vale Royal | 1 | 1 | Slight |
| Wed 27 Jan 1999 | Warrington | 2 | 4 | Slight |
| Wed 27 Jan 1999 | Vale Royal | 2 | 1 | Slight |
| Thu 28 Jan 1999 | Vale Royal | 1 | 1 | Slight |
| Fri 29 Jan 1999 | Vale Royal | 1 | 1 | Slight |
| Sat 30 Jan 1999 | Vale Royal | 2 | 2 | Slight |
| Wed 3 Feb 1999 | Vale Royal | 4 | 4 | Slight |
| Mon 8 Feb 1999 | Vale Royal | 2 | 2 | Slight |
| Wed 17 Feb 1999 | Vale Royal | 3 | 3 | Slight |
| Fri 26 Feb 1999 | Vale Royal | 2 | 2 | Slight |
| Wed 3 Mar 1999 | Vale Royal | 2 | 1 | Slight |
| Wed 3 Mar 1999 | Vale Royal | 2 | 1 | Slight |
| Sun 14 Mar 1999 | Vale Royal | 2 | 4 | Fatal |
| Mon 15 Mar 1999 | Vale Royal | 2 | 2 | Slight |
| Thu 25 Mar 1999 | Vale Royal | 1 | 1 | Slight |
| Thu 25 Mar 1999 | Vale Royal | 2 | 3 | Serious |
| Thu 8 Apr 1999 | Vale Royal | 3 | 2 | Slight |
| Thu 15 Apr 1999 | Vale Royal | 1 | 1 | Slight |
| Thu 15 Apr 1999 | Vale Royal | 2 | 1 | Slight |
| Tue 20 Apr 1999 | Warrington | 2 | 2 | Slight |
| Sat 8 May 1999 | Vale Royal | 2 | 1 | Slight |
| Sun 9 May 1999 | Vale Royal | 1 | 2 | Slight |
| Wed 12 May 1999 | Vale Royal | 2 | 1 | Slight |
| Wed 12 May 1999 | Vale Royal | 2 | 3 | Slight |
| Thu 13 May 1999 | Vale Royal | 2 | 1 | Slight |
| Sat 15 May 1999 | Vale Royal | 2 | 1 | Slight |
| Sat 15 May 1999 | Vale Royal | 2 | 1 | Slight |
| Mon 17 May 1999 | Vale Royal | 2 | 1 | Slight |
| Tue 18 May 1999 | Vale Royal | 2 | 1 | Slight |
| Thu 20 May 1999 | Vale Royal | 2 | 1 | Serious |
| Wed 26 May 1999 | Vale Royal | 2 | 2 | Slight |
| Fri 4 Jun 1999 | Vale Royal | 2 | 2 | Slight |
| Sun 27 Jun 1999 | Vale Royal | 2 | 1 | Slight |
| Wed 7 Jul 1999 | Vale Royal | 2 | 1 | Slight |
| Wed 7 Jul 1999 | Vale Royal | 2 | 2 | Slight |
| Mon 12 Jul 1999 | Vale Royal | 2 | 1 | Slight |
| Mon 12 Jul 1999 | Vale Royal | 2 | 1 | Slight |
| Tue 13 Jul 1999 | Vale Royal | 2 | 1 | Slight |
| Mon 2 Aug 1999 | Vale Royal | 2 | 1 | Slight |
| Tue 3 Aug 1999 | Vale Royal | 2 | 2 | Slight |
| Fri 6 Aug 1999 | Vale Royal | 1 | 1 | Slight |
| Mon 9 Aug 1999 | Vale Royal | 1 | 1 | Slight |
| Mon 9 Aug 1999 | Vale Royal | 2 | 2 | Slight |
| Mon 16 Aug 1999 | Vale Royal | 3 | 3 | Slight |
| Wed 18 Aug 1999 | Vale Royal | 1 | 1 | Slight |
| Sun 22 Aug 1999 | Vale Royal | 2 | 1 | Slight |
| Wed 1 Sep 1999 | Vale Royal | 2 | 2 | Slight |
| Thu 2 Sep 1999 | Vale Royal | 2 | 2 | Slight |
| Fri 3 Sep 1999 | Vale Royal | 3 | 2 | Slight |
| Sat 11 Sep 1999 | Vale Royal | 2 | 1 | Slight |
| Thu 16 Sep 1999 | Vale Royal | 2 | 1 | Slight |
| Thu 16 Sep 1999 | Vale Royal | 2 | 2 | Slight |
| Sun 19 Sep 1999 | Vale Royal | 2 | 1 | Slight |
| Sun 19 Sep 1999 | Vale Royal | 1 | 1 | Slight |
| Wed 29 Sep 1999 | Vale Royal | 2 | 1 | Slight |
| Thu 7 Oct 1999 | Vale Royal | 2 | 1 | Slight |
| Fri 8 Oct 1999 | Vale Royal | 2 | 3 | Slight |
| Wed 20 Oct 1999 | Vale Royal | 3 | 2 | Slight |
| Wed 24 Nov 1999 | Vale Royal | 3 | 3 | Slight |
| Thu 25 Nov 1999 | Warrington | 2 | 1 | Slight |
| Thu 25 Nov 1999 | Vale Royal | 1 | 1 | Serious |
| Sat 11 Dec 1999 | Vale Royal | 2 | 1 | Slight |
| Sat 11 Dec 1999 | Vale Royal | 2 | 1 | Slight |
| Sun 19 Dec 1999 | Vale Royal | 2 | 2 | Slight |
| Thu 23 Dec 1999 | Vale Royal | 2 | 1 | Slight |
| Sun 26 Dec 1999 | Vale Royal | 2 | 2 | Slight |