The fundamental objective of a bridge railing system is to offer public safety along the length and edges of the bridge. This includes rerouting rogue automobiles back onto the road without posing a safety threat, as well as guaranteeing the safety of bicyclists and pedestrians. Although bridge railing systems do not provide structural support, they must be crashworthy. Bridge railing, as a result, differs from ordinary highway railing in that it is more rigid than flexible highway railing. Because it provides a progressive shift in the stiffness of the two railing systems, transition railing is utilized to connect the two railing systems. Railing design and needs have changed as vehicle size and power have changed.