Dulyachot Cholaseuk, "Develop of a speed sensitive collapsible mechanical speed bump", The 5th International Conference on Engineering, Energy and Environment. 1-3 November 2017, Arnoma Grand Bangkok Hotel, Thailand
A speed bump is a traffic calming device that uses vertical deflection to slow vehicles, typically used in populated area. Typical solid speed bumps made of concrete or rubber can damage vehicles' suspension components and cause discomfort to passengers even when a vehicle passes at low speed. A speed sensitive collapsible mechanical speed bump presented in this paper aims to alleviate those problem in small roads. The speed bump was shaped as a regular speed bump but with internal mechanism that allows it to collapse to a flat surface when a vehicle passes at low speed while lock-up at high speed. The trigger speed is designed at 8 km/hr. Pendulum type mechanism was used for both speed sensing and locking. Result from road test confirmed that the idea has potential for future development.