Four patients can be carried in a two-wheeled double-deck trailer ambulance developed by E. H. Struebling of Tonawanda, N. Y. Stretchers may be placed in the trailer from the end or either side. The roof of the ambulance is wood, sides and ends are enclosed in canvas and it is mounted on a steel chassis easily attached to the rear bumper of any passenger car. The trailer is eight feet long and weighs about 500 pounds.