How Highway 407 works is that every time the customer uses the route, the camera installed above the on-ramps take record of the transponder, leased by the Highway 407. The transponder holds information of the customer's automobile, and thus will mail the bill to the transponder's holder's residence. In case of the customer has no transponder, the camera takes a photo of the vehicle's licence plate, and a video toll charge will apply. If the customer fails to pay, an interest would be added to the owed amount. The fee would be charged when the customer attempts to renew their driver's licence.