What must the driver of vehicle 1 do before turning?

Before making a turn, it is imperative for the driver to ensure that the path is clear of any oncoming traffic or obstacles that could lead to an accident. This is where the concept of looking both ways becomes especially relevant. Checking for approaching vehicles, including any that may be closely approaching from behind or to the side, ensures safe maneuvering.

While signaling and checking for cyclists are also important, the primary action that guarantees safety during a turn is to look both ways; this allows the driver to verify that there are no vehicles or pedestrians in proximity that could pose a hazard. Therefore, understanding the importance of being aware of the traffic situation in all directions is crucial for any driver preparing to turn.