Apart from Vehicle Tags, motorists can use Class Tag (formerly known as Toll Tags (Basic Edition)) for Free-Flow Tolling Service.
A Class Tag is categorized by vehicle class. For example, a private car will be affixed with a private car version of Class Tag, and a medium goods vehicle will be affixed with a medium goods vehicle version of Class Tag.
Tunnel tolls will be deducted from the stored-value account associated with the Class Tag. It can be purchased at Free-Flow Tolling Service outlets
Vehicle not Affixed with a Toll Tag
For vehicle is not affixed with a toll tag, the system will recognize its car plate number. Tunnel tolls have to be paid in arrears within the grace period.