A cervical collar for ensuring an open airway has an occipital portion, right and left mandible engaging sections extending from the occipital portion, and right and left sternum engaging portions extending from the occipital portion. Each of the mandible engaging sections has an adjustable airway opening member for assuring opening of the airway. In one embodiment, each of the mandible engaging sections has a baseplate, and a carrier for the airway opening member which is controllably displaceable along a groove formed in the baseplate. A strap is attachable to an anterior portion of each baseplate, so that right and left straps are simultaneously tensionable and fastenable together on the chin of a subject to ensure symmetric stabilization. The anterior triangle of the neck is unobstructed following fastening together of the straps and of the sternum engaging portions, to facilitate monitoring of various throat related clinical conditions following a traumatic event.