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Location from the National Highways junction reference. Nearest towns: Hemel Hempstead, Harpenden, Berkhamsted, St Albans.
No collisions within 2 miles of J9 are recorded against the M1 itself. Police logged them against the roads that meet here — M1 (177), A414 (80), B487 (46), A4147 (43), A4146 (28).
Every road within 3 miles of M1 J9 — local streets, A-roads, everything. Because it follows how built-up the area is rather than the motorway, it is not used in the danger ranking.
📊 Full collision analysis around M1 J9 →M1 J9 is at Flamstead & Redbourn. National Highways signs it as Flamstead. The nearest town is Hemel Hempstead.
Live incidents for the whole M1 are listed on the M1 traffic page, updated every 5 minutes from National Highways.
No police collision records are held on the M1 within 2 miles of J9.
Live incidents, roadworks and delays for the whole M1, updated every 5 minutes from National Highways.
🚗 M1 live traffic →