The Kelley AC Series in-ground wheel restraint is a permanently installed, automatic truck restraint that effectively restrains vehicles with a hydraulically operated, moving wheel chock. It provides continuous restraining force to the chocked wheel, reducing the probability of landing gear collapse, vehicle creep or vehicle walk, and can even service trucks with lift gates lowered to grade level. The wheel chock is flush-mounted in-ground, providing no interference for snow plows or drive cleanup.