It would be very helpful and convenient to add a feature where waze analyses a completed journey and shows the user if they passed through particular tolls I.e. congestion charging and ULEZ as many people get confused about this and end up paying the charge anyway incase they did pass through them.

It would save people money and act as a fail safe.

I myself have paid many times although I have routed to avoid the tolls but the way wake works by diverting often to avoid traffic it adds tge risk of passing through the charging zones.