Which action is recommended when driving in a tunnel?

When driving in a tunnel, it is recommended to reduce speed and remain alert for several important reasons. Tunnels often have unique driving conditions, such as reduced visibility, potential for sudden stops from other vehicles, and a lack of natural light. Reducing speed allows for better control of the vehicle and more time to react to any unexpected situations, such as pedestrians, stationary vehicles, or changes in road conditions.

Maintaining alertness is crucial as tunnels can be disorienting due to their enclosed nature, and the risk of accidents may increase if drivers are not paying attention. Additionally, tunnels can have varying traffic patterns, and being aware of your surroundings helps in making safe driving decisions. Overall, combining a reduction in speed with heightened alertness enhances safety for both the driver and other road users within the tunnel environment.