ECTunes and etrans have in a joint project tested synthetic engine sounds for electric busses and motor cycles. The aim is to design the best possible sound that live up to the upcoming legislation for external warnings sound for electric and hybrid vehicles. The sound are designed based on the design guidelines from the "White paper on external warning sounds for electric cars - Recommendations and guidelines" has been tested on suitability, audibility and annoyance. The test panel included young and old people as well as blind people. A report with the test results will be released in January 2012.
