Sadeghipour, E., Wehrle, E., and Lienkamp, M., "An Approach for the Development and the Validation of Generic Simulation Models for Crash-Compatibility Investigations," SAE Int. J. Trans. Safety 4(2):219-228, 2016, doi:10.4271/2016-01-1373.
Global emission targets and high fuel costs encourage manufacturers to produce ultralight vehicles. This and the low range of electric cars have resulted in new vehicle concepts and reuse of the quadricycles classification for microcars in Europe.