Overview
- The Oxford Mail and other local papers published warnings on Monday, September 28, 2026, correcting a long‑running belief that gantry cameras only operate when variable speed limits are displayed.
- Modern gantry and average‑speed systems record speed, time, location and vehicle registration continuously, and they can catch drivers whenever limits are broken.
- There is no legal '10% plus 2mph' safe buffer; the National Police Chiefs' Council recommends that margin only as officer discretion and motorists are technically liable from 1mph over the limit.
- Penalty outcomes vary by circumstance and can include fines, penalty points or disqualification while some drivers within set margins may be offered a speed‑awareness course and higher speeds such as around 86mph on motorways typically rule that option out.
- Enforcement practice allows officers not to be visible and flashing headlights to warn vans can risk breaching section 89 of the Police Act 1997, which makes wilfully obstructing an officer an offence even though proving it is often difficult.