What must a driver do if an obstacle appears or traffic safety is threatened?
Explanation
When an obstacle or hazard comes up, react at once: slow down, stop the vehicle completely if needed, or, once you are sure it is safe, drive around the obstacle without putting other road users at risk.
KET reference: KET 128: if an obstacle appears or traffic safety is threatened, the driver must slow down, even stop the vehicle completely, or drive around the obstacle without endangering other road users.