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Applying TRIZ to Improve a Guide Post

A guide post is used to separate pavement from roadway and widely used for car parks, pedestrian safe zones and refuge islands as well as for asset protection such as columns, pipes from impacts [. But it is very easily hit hard by cars. This study uses the contradiction matrix in the TRIZ method, 39 engineering parameters, and 40 inventive and innovative principles to identify the areas of improvement to address the above problems. When the guide post is hit by a vehicle, a flexible structure located between base and cylinder can curve and spring back to original position, and therefore endures more powerful hit. In addition, the spring back function lets the guide post automatically return to original position to alert drivers. This structure will has more durable service life, so, it can be used to reduce the maintenance times, and cost for the users.