What are the most important lights to use at night for communicating intentions to other drivers?

The most important lights to use at night for communicating intentions to other drivers are turn signals and brake lights. Turn signals indicate to other drivers that you plan to change direction, whether it's turning left or right. This is crucial for maintaining safety on the road, as it allows other drivers to anticipate your movements and react accordingly.

Brake lights serve a similar purpose by informing drivers behind you that you are decelerating or stopping. This alert is vital, especially at night when visibility may be reduced and other drivers might not expect sudden stops. The use of turn signals and brake lights is part of the standard communication processes among drivers, ensuring everyone on the road is aware of each other's intentions.

While headlights and fog lights enhance visibility, they are not specifically designed to communicate your driving intentions. Emergency lights are used to signal that a vehicle is experiencing trouble, and parking lights are typically used when a vehicle is stationary. Interior lights are not visible to other drivers and do not serve the purpose of signaling intentions on the road.