I would like to suggest a feature that displays the predicted traffic signal status at upcoming intersections.
The idea is to estimate the signal state (Red, Yellow, or Green) using anonymous real-time movement data from Waze users. By analyzing how groups of vehicles stop, wait, and start moving through a signalized junction, Waze could infer the current traffic light phase with reasonable accuracy, even where there is no direct connection to the traffic signal system.
Possible benefits:
Helps drivers anticipate stops more smoothly.
Encourages gradual braking and acceleration, improving fuel efficiency.
Reduces unnecessary hard braking.
Provides better situational awareness, especially at unfamiliar intersections.
Can improve ETA calculations by considering expected signal delays.
A confidence indicator (for example, High/Medium/Low) could be shown since the prediction would be based on crowd-sourced vehicle movement rather than direct signal data.
This could become even more accurate as more Waze users pass through the same intersections over time.