What action must you take when a traffic light turns green?

When a traffic light turns green, it is crucial to check for pedestrians before proceeding. This action helps ensure the safety of all road users. Even though the light indicates that it is your turn to go, pedestrians may still be crossing the intersection, or they may have just stepped off the curb expecting to walk. Being aware of your surroundings allows you to react appropriately and avoid accidents.

The importance of this action is particularly heightened in urban areas where foot traffic is common. By taking a moment to scan for pedestrians, you can enhance road safety not only for them but also for yourself as a driver. It's a fundamental part of defensive driving that emphasizes awareness and caution, even when the traffic light is in your favor.

The other actions suggested in the choices are not advisable because they do not prioritize the safety of pedestrians or other potential hazards that can occur at an intersection. For instance, proceeding immediately without checking can lead to dangerous situations if pedestrians are present. Stopping and waiting for other vehicles creates unnecessary confusion and does not account for the need to check for pedestrians. Speeding up to maintain the flow of traffic disregards safety protocols and can lead to reckless driving.