And that's why it's disingenuous to frame cycling safety as a binary that's contingent on whether or not a particular cyclist is wearing a helmet. The risk equation for you is vastly different from someone who hops on their cruiser bike to go 10 blocks on a protected bike trail to the grocery store.

Once you factor in all the variables, the helmet is only a small part of the equation, and probably not going to do you much good should you find yourself under the wheels of a semi-truck. Yet having that piece of styrofoam strapped to your head has given you the (possibly misplaced) confidence to go fast with semi-trucks.

Not to mention that it dehumanizes you in the eyes of drivers.

That's classified as an electric motorbike in the EU, if it's a legal, registered vehicle. You need the appropriate driving license and insurance to drive one.

Alternatively, if it's a modified bicycle, it's simply illegal on public roads.

The helmet isn't going to protect you from semis, unfortunately. Here in NYC most cyclist deaths are caused by being run over by larger vehicles, which can easily be fatal even at slow speeds regardless of whether you're wearing a helmet or not. No helmet is going to support the weight of a truck.

Now I do wear a bike helmet when biking for other reasons, but I give trucks wide leeway.

You're welcome to wear whatever you want while riding your illegal whatever-you-call-it. Don't scold the rest of us.

You seem very defensive in your position of advocating people be less safe on their bikes. Quite odd. Anyway, good day. "There is good evidence that bicycle helmets are effective in reducing head and facial injury in the event of a crash [...]" [0]

0. Ivers R. Systematic reviews of bicycle helmet research. Inj Prev. 2007;13(3):190. doi:10.1136/ip.2007.015966 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2598379/

The evidence in favor of wearing a helmet while in a car is just as strong, but nobody is up here advocating for that.

By the way, helmets on bicyclists tend to make car drivers behave like even bigger jackholes than usual. https://psyarxiv.com/nxw2k "... public health research might be best served by shifting focus to risk elimination rather than harm mitigation."

The argument could be just as strong, but since very few people wear helmets in cars (only Formula 1 etc.), I think it's unlikely "the evidence" is just as strong; however, by all means provide us a reference.