The Salik system is a corrected tolling system that covers all of Abu Dhabi's major highways, airports, crossings, and lanes. The system is part of the Abu Dhabi government's strategy to encourage the use of public transport and to improve traffic flow and reduce congestion. The registration of Salik tags is a must for all vehicles that want to use the road network. In order to register for a Salik account, you will need to bring a passport with an expiry date of at least 6 months, a Salik tag number, proof of vehicle registration card details, etc.