Core: The three-colour traffic light: green, yellow, red — and its limits

The yellow exception applies exclusively to drivers who have already approached the light so closely that stopping is no longer reasonably possible — it is a safety valve, not a licence to always speed through. An illuminated arrow restricts the light to exactly that direction: if you are going straight on while only the left-turn arrow is green, that green does not apply to you. An illuminated bicycle image in turn applies only to cyclists, moped riders on a cycle/moped path and mobility-scooter drivers — not to cars. Green gives no right to enter an occupied junction: drivers may not block a junction, not even on green. And the three-colour light outranks a priority sign such as shark's teeth or a B-sign once the light is in operation.