Portal Traffic Sign

           Portal Traffic Sign is generally found elsewhere along the roadway. It is important to design this traffic sign portal as light as possible due to energy absorption during car accident.

Noise Barrier, Steel Building

           Noise barrier (also called a sound-wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effective method of mitigating roadway, railway, and industrial noise sources – other than cessation of the source activity or use of source controls.