A wheel chock system includes a wheel chock configured to support a wheel of a vehicle and having an arm that extends from the wheel chock. The wheel chock includes a crossbar that has an outer wall, an open interior, and a tab extending from the outer wall into the open interior. The arm has an outer surface in which a notch is defined, and when the notch is aligned with the tab the arm is slidably received in the open interior and extendable therefrom.