[the OlLine Rebel]

Solve what problem?

It’s nice to keep opposite traffic from the other side, but what happens if they bounce off the barrier and go sideways into “same” traffic?

Solve one problem, create another.

[PAR35]

but what happens if they bounce off the barrier and go sideways into “same” traffic?

No guarantees, but a whole lot less likely to be fatal. Certainly the energy at impact is going to be several multiples lower.