Fatal
Serious
Slight
Uncategorised
| Date | Local Authority | Vehicles | Casualties | Severity |
|---|---|---|---|---|
| Sat 10 Jan 1998 | Broxbourne | 1 | 1 | Slight |
| Sat 10 Jan 1998 | Welwyn Hatfield | 2 | 1 | Serious |
| Tue 27 Jan 1998 | Welwyn Hatfield | 3 | 3 | Serious |
| Sun 15 Feb 1998 | Broxbourne | 1 | 1 | Serious |
| Thu 19 Mar 1998 | Broxbourne | 2 | 1 | Slight |
| Thu 9 Apr 1998 | Broxbourne | 3 | 5 | Slight |
| Wed 15 Apr 1998 | Welwyn Hatfield | 1 | 1 | Slight |
| Thu 7 May 1998 | Welwyn Hatfield | 2 | 3 | Serious |
| Sat 13 Jun 1998 | Welwyn Hatfield | 2 | 3 | Serious |
| Fri 26 Jun 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Sat 18 Jul 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Mon 14 Sep 1998 | Broxbourne | 2 | 1 | Serious |
| Tue 20 Oct 1998 | Broxbourne | 2 | 4 | Serious |
| Sat 7 Nov 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Fri 18 Dec 1998 | Welwyn Hatfield | 2 | 1 | Slight |
| Sun 27 Dec 1998 | Welwyn Hatfield | 2 | 2 | Slight |