First of all you have to have alot of guts to say that.
Why? Is R. Reisman infallible? Is it impossible to disagree with him on any subject whatsoever?
Admittedly, he is a talmid chochom. But that doesn’t necessarily make him any more qualified to decide public safety matters than anyone else.
Also, Rabbi Reisman isn’t saying that boys should stick out their hands to hitch. he’s saying it the other way around. If a frum person sees a bochur waiting he should stop and tell him to come in.
That’s just as bad. That’s encouraging adults to teach children that it’s okay to enter stranger’s cars.
The Wolf