I really don’t agree with that at all. For me visual navigation is in fact safer than acoustic one because it’s clearer and offers less chances for wrong interpretations (which means less stress while being navigated).
I also appreciate the fact that with visual navigation I’m able to identifiy the distance to the next instruction with a quick glance. This way I’m not forced to look at the display all the time because I know approximately when it’s time to do so.
For me navigation devices (regardless if standalone or smartphone) are a real improvement for saveness because using them is much more comfortable than fiddling with a paper map placed in a tank bag (especially if your eyes are getting worse), like I did years before.
Here I absolutely agree. This is the reason why it’s so important for me that my navigation system can be configured for my personal needs (e.g. display/map appearance and some navigation behaviours) so that I don’t have to operate any controls while driving (even in “difficult” situations like after missing a turn or being forced to take a detour). This is one of them reasons why I like the Kurviger app so much.
The only acoustic input I want while driving is my wife’s voice (she’s usually driving on her own bike behind me) over our (simple) intercom system (despite my exhaust, of course ). I don’t want to have this “mixed up” with navigation instructions. Especially because we’re frequently informing each other before taking a turn (like “I’ll turn off after the third, red car”, “free and save for a long distance”, “beware, I’ll stop completey before I turn into this street just to be sure” or so). I really don’t want to be interrupted by my navigation app or even have communication issues because the system is switching audio sources.
I think we can conclude: it depends a lot on your personal preferences and circumstances. So the most valuable navigation system is a flexible one.