During core hours 7am-5pm Mon-Fri, the cameras capture the registration number of the vehicle and check if this is an authorised vehicle against a database of permit holders and authorised day parkers/visitors. If the vehicle is on the database, then no action is taken. If it is an unauthorised vehicle, a parking charge notice is issued to the keeper of the vehicle.
Outside of core hours 7am-5pm Mon-Fri, the system will check if the vehicle is on the authorised list of registered staff members and students, or, if they have paid for their parking at the pay stations. Unauthorised vehicles or those leaving without paying will be subject to enforcement action.