48″x96″ yellow temporary road panel for nstruction Trailer Products - RoadSafe Traffic Syste, Inc. Sign Panel: Full-sized 48″ x 96″ all-aluminum nstruction, sealed against the elements; ntroller: On-board self-contained ntroller with 7 modes of operation; Frame nstruction: Fully welded with 2,000-lb. axle, 1,000-lb. leaf springs, roller