Crash test - Curve marker sign

01 Sept 2017 Examples of accidents & crash tests
Crash tests:
Two motorcycles were each crashed at a speed of 60 km/h against two different curve marker sign systems. In both cases, the Hybrid III crash test dummy representing the rider was wearing full protective clothing. In the first test, the dummy motorcyclist collided – as in the previous crash example – with a conventional marker sign post made from steel; in the second test, the dummy motorcyclist collided with a post on which a marker sign made from plastic was mounted. Most guide posts in Germany are made from plastic. The ones used in the test had a conventional shear-off attachment, with which they are connected to the foundation in the ground. In the event of a collision, the post becomes separated from the attachment without causing significant material damage or personal injury. After an accident, the post can generally be reinserted for further use.
Crash test results:
Steel posts: The measured stress values were well above the biomechanical limits. The shoulders, chest and head were subjected to extreme forces. No human could survive a crash like this.
Plastic posts: All measured values were in the noncritical range, well below the biomechanical limits. Provided no follow-on collision occurs (e.g. against a tree), a crash like this would be survivable.
Strategy for road safety measures: Safety-oriented roadside design must form a key part of road planning and maintenance.