What does this sign mean when displayed on the approach to a toll plaza?

Electronic toll not accepted in this lane.
Electronic toll accepted in any lane.
Payment in euros only in this lane.
Electronic toll out of order in this lane.

Explantion: This sign is used at toll plazas to direct traffic into a lane where the toll charge is collected electronically. When the vehicle passes through the plaza it is identified by means of an electronic tag fitted to the front windscreen. Payment will be collected via the users account. Only vehicles fitted with the tags are allowed to use those lanes.

Theory Tester

What does this sign mean when displayed on the approach to a toll plaza?

Legal Matters/Rules of the Road