e of preservative-treated wood posts and galvanized steel components has nearly eliminated the need for this work. Periodic re-tensioning of cable barrier systems may be required. Graffiti on concrete barriers can present an ongoing maintenance cost. Some systems may interfere more with roadside mowing and vegetation control.
6.2 Collision maintenance
The amount and cost of repairs after an impact by a vehicle can play an imporant role in the system selection. The number of impacts that are like