Embodiments of the present invention provide a safety support apparatus for a cabin over engine (COE) truck cabin elevated in a raised position. The safety support apparatus provides a base member having a clamp mechanism which adjusts to truck chassis designs with rails of varying thicknesses. The frame of the safety support apparatus provides a receiver which may engage the bottom of an elevated truck cabin. The frame and base member are adjustable to allow configuration on either side of a truck cabin and deployment of the support apparatus at a range of angles.