Every time I drive the Diagonal, I see those alarming surveillance cameras just before I reach Boulder. What are they and how do they work? Are they a violation of my right to privacy?

Thousands more people could have speeding convictions scrapped after National Highways extended an investigation into a technical failure with its cameras. The Department for Transport (DfT) said the ...

Variable speed cameras work in conjunction with dynamic speed limit signs on smart motorways. (Alamy) If applicable, the cameras will work to the national speed limit instead. If the unit's radar ...