Anyone who has tried to use a cycle path alongside an unlit rural road will know that it is often impossible to see the edge of the path in the dark, especially when you are blinded by the headlights of an oncoming car. We are, therefore, encouraged to hear that the County Council is conducting an experiment in which self-illuminating road studs (cats-eyes) will be installed along the edges of such a path. These will be powered by batteries that are charged by solar panels during the day. A mile-long section of pavement between Girton and Oakington has been chosen for the experiment. The path – which is currently extremely narrow – will also be widened slightly as part of the scheme.