The specificity of handgun versus firearms in general belies the weakness of the argument. Would it matter in the thought experiment if it were a long gun?

The status of open carry legality in a US state is not correlated with firearms violence rates. Firearm prevalence in general is.

I support Vision Zero. It has a sound logical and statistical basis.

Vision Zero is orthogonal to a law against using a mobile telephone while operating a vehicle that is stopped.