Abstract: An electronic tolling system includes an in-car communicating device in a vehicle, a roadside transmitting unit and a roadside confirm unit positioned in front of a tollbooth, and a toll managing center making two-way communication with the communicating device. The in-car communicating device receives the signal of the transmitting unit and transmits data of the user and the date of transaction to the toll managing center, which then receives and confirms the data and then feeds back a confirm signal. The vehicle transmits the confirm signal to the confirm unit when passing by the confirm unit so as to pass through the tollbooth smoothly. If the confirm unit does not receive the confirm signal from the toll managing center, it starts an automatic photographing system to take picture of the vehicle for an evidence of no toll payment.