On Nov 24, 4:07*pm, "HeyBub" wrote:


Excellent points. I take it, then, that the guard rails are also made of
Aluminum for exactly the same reasons?


Guard rails are two to three times THICKER than a traffic sign and
are designed to be structural components that take load and deflect
a wayward vehicle... There is MUCH more of a guard rail to rust
away which is why they last longer -- they do rust though...

~~ Evan