Fuel line run question

My car too has a 1/2" aluminum line ran along the inside of the frame tie, 2X2 square tube. At the front, right behind the trans cross member it crosses over and runs along the top of the of the apron above the front suspension. I used a bulkhead fitting to come through to the engine compartment, the regulator is mounted in a similar location to the OP's.

I drive on the street quiet a bit and have never had a issue with anything hitting the line, yet anyway.