Rozne typy zvodidiel…
Steel Barrier Systems vs. Concrete Walls [10:45 “Roadside Safety”]
youtube.com/watch?v=6hpNVfk6fWI
Concrete Bridge Railings [13:40 “The Crittenden Automotive Library”]
youtube.com/watch?v=CBrPVmuGp2U
The Modified Thrie Beam Guardrail [9:15 “PublicResourceOrg”]
youtube.com/watch?v=qmNJaBGIETk