In an effort for efficiency, more lanes on the Dulles Toll Road will become E-ZPass only, the Metropolitan Washington Airports Authority said on Wednesday.

Beginning Sept. 2, MWAA will convert 19 exact-change lanes into E-ZPass lanes. First up: Westbound Fairfax County Parkways exit, far right lane.

During the conversion project coin baskets will be removed and replaced by upgraded E-ZPass infrastructure. Conversions are scheduled for unattended “exact change” lanes at the main toll plaza and exit ramps along the roadway, says MWAA. To minimize congestion, lanes will be reconfigured one at a time, with each conversion taking two-to-four weeks. When the project is complete, all toll plazas will still have at least one “full service” lane available.

“This lane conversion continues the long tradition of providing a convenient, consistent travel option for drivers in Northern Virginia,” Dulles Toll Road Manager Cyndi Ward said in a statement. “About 90 percent of drivers currently using these lanes are already paying with E-ZPass rather than coins. Full-service lanes will continue to be available at all toll plazas along the roadway for those wishing to pay with cash, but we encourage drivers to consider the added convenience of E-ZPass in order to bypass the lines associated with cash payments.”

Don’t have an E-ZPass? Sign up for one at ezpassva.com.

MWAA will announce other lane conversions as they are about to occur so drivers can plan accordingly.

Photo: Dulles Toll Road/file photo