General Road and Highway Discussion

[Canard]

 Are the acrylic/tempered glass panels shown in the above GOOGLE maps link, tethered in for safety or are  they being warmed in the winter? Look at the top of each panel in the sections over the roadway below? 

Something else?  Just for #Ss&Gs? Burgler alarms? 

I think you're seeing the power lines behind the panels and confusing them with something attached to the panels.

[i]Edit - Er, sorry; I see what you're getting at. My guess is those are to prevent fragments of plastic/glass from showering down onto the road below in the event one should break. Lexan is super flexible and virtually impossible to shatter or break, though - In designing automation for 15+ years in which every system uses Lexan for guarding enclosures, I've never seen a panel break, ever. Which leads me to think that the panels in that link are actually glass.

Probably a lot easier too. Plastic is way lighter than a slab of concrete.

Yup - this.