You already have to be aware of the time, the day of the week, the latest changes and of course, roadworks.
But if you find a time when you can drive east from the west end of Friar Street, keep a special look out for cyclists.
This junction, where Greyfriars Road meets Friar Street now has this bizarre cycle lane complete with its own traffic light. Can there be a more useless traffic light? When has a cyclist ever stopped at any red light, let alone one designed for them?
This photo was taken about five seconds after a cyclist rode straight through it on red.
The one thing you can be sure of. It will be dug up and remodeled within a year or two so the only really annoying thing is why they go to so much trouble to waste money.