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The introduction of warning signals for the protection of visually-impaired persons must consider the resulting noise annoyance. Warning signals should not conflict with the long-term endeavours to reduce noise exposure and noise annoyance caused by road traffic noise. Since at least one million healthy life years are lost every year from traffic related noise in the western part of Europe and approximately 1.8 % of all myocardial infarctions would be attributable to road traffic noise, the disadvantages related with warning signals should not be completely disregarded. In particular, with respect to the creation and preservation of quiet zones in cities potentially emerging noise problems related to potential warning sounds must be discussed and avoided right from the beginning. Here, the UNECE thinks about a pause switch, where any kind of acoustic vehicle alerting system can be stopped in its operation temporarily (for example for stop and go situations). In contrast to it, blind associations demand that it is not possible to switch off the alerting sound system. All in all, it is of vital importance that further research will be performed with respect to the development of intelligent and comprehensive approaches to warn drivers as well as pedestrians about potential collision danger far beyond concepts of simply continuously emitting a warning signal and hoping that the vulnerable pedestrian hears early enough the approaching vehicle. Finally, the authors expect that due to the favored differentiation of brands in the automotive industry, a certain acoustic image and emotional bonding is preferred by the manufacturers. This means that a standard alerting signal for all electric vehicles is presumably not in the interest of the manufacturers and maybe even of the customers. Since an added alerting sound to the vehicle exterior noise of electric vehicles should be unmistakable and distinctive and should not confuse the identification, the creation of warning signals appears very limited. Nevertheless, different sound concepts are thinkable fulfilling these requirements.