Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Fri 16 Jan 1998 | East Hertfordshire | 3 | 2 | Slight |
| Sat 7 Feb 1998 | East Hertfordshire | 2 | 3 | Serious |
| Sat 14 Feb 1998 | East Hertfordshire | 2 | 2 | Serious |
| Sat 7 Mar 1998 | East Hertfordshire | 2 | 1 | Slight |
| Thu 16 Apr 1998 | East Hertfordshire | 2 | 2 | Serious |
| Sat 30 May 1998 | East Hertfordshire | 3 | 1 | Slight |
| Fri 10 Jul 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 12 Oct 1998 | Brighton and Hove | 2 | 1 | Slight |
| Tue 13 Oct 1998 | East Hertfordshire | 2 | 2 | Slight |
| Tue 13 Oct 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Tue 13 Oct 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 30 Oct 1998 | Welwyn Hatfield | 2 | 2 | Slight |
| Mon 9 Nov 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 21 Nov 1998 | East Hertfordshire | 2 | 2 | Serious |
| Wed 25 Nov 1998 | Welwyn Hatfield | 3 | 2 | Serious |
| Wed 25 Nov 1998 | Welwyn Hatfield | 3 | 2 | Serious |
| Sat 28 Nov 1998 | Welwyn Hatfield | 1 | 1 | Slight |