Display and possession of license

(a) The holder of a license as a driver training school or third-party tester must display that license in a conspicuous location in the public office of the school or third-party tester facility. (b) The holder of a license as an instructor or third-party examiner must have that license, and the instructor's or third-party examiner's driver's license, in the possession of the instructor or third-party examiner at all times while the instructor or third-party examiner is engaged in driving instruction or testing. Upon the request of a peace officer, an instructor or third-party examiner must show to the officer that instructor's or third-party examiner's driver's license and instructor or third-party examiner license.