PORTLAND — The Maine Turnpike Authority is soliciting information from motorists asking about their driving patterns to help in planning future highway projects.

Temporary stop signs were put up yesterday at toll plazas where turnpike workers began handing out survey cards to drivers. The surveys ask a variety of questions, including where motorists got on and off the turnpike, how many people were in the vehicle, toll plazas used and if they use E-ZPass.

Drivers are being asked to complete the surveys and mail them back to the turnpike authority.

About 60,000 surveys will be distributed. The survey will end Aug. 15.