Drivers who plan to travel the soon-to-be completed Triangle Expressway in western Wake County can purchase a device to get a discount for every trip on the toll road. Transponders will go on sale Tuesday in Morrisville.

They are also available online at

When Phase I of the toll road – a stretch of 3.4 miles between Interstate 40 at N.C. Highway 147 in Durham County south to Interstate 540 in Wake County – opens in December, vehicles with transponders will be debited approximately 15 cents per mile as they pass underneath toll readers. A transponder is linked to a credit card, and drivers receive a monthly statement.

For vehicles without a transponder, roadside cameras will snap pictures of their license plates as they pass, and the Turnpike Authority will send them a bill in the mail at a rate of 23 to 24 cents a mile. People who ignore the bill will have a hold placed on their annual vehicle registration.

When the first phase of the road opens, the existing portion of N.C. 540 between N.C. Highways 54 and 55 will also be converted to a toll road.

The 12.6-mile Western Wake Freeway should open in 2012 between N.C. 55 in Cary and N.C. 55 in Holly Springs.

NCQuickPass transponders will also work on the E-Z Pass system in the Northeast and on toll roads in Florida.

Web Editor: Jodi Leese Glusco

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