
In the late 1950's the New Jersey State And Highway department and a local technology institute created what we now call the "Jersey Barricade". While this sturdy concrete invention was originally used to divide multiple lanes of traffic, it's now more commonly used to protect work sites or construction zones from the surrounding traffic. (And more creatively, the fictional character Mike Roark, (played by Tommy Lee Jones), uses these barricades to stop the flow of lava in the 1997 movie Volcano.)
This move towards temporary use has popularized a lighter weight, more portable plastic version of jersey barricades, often filled with water or sand.
These water filled barricades are very different than concrete barricades in 3 major ways:
1. Water filled plastic barricades are optimized for temporary use.
Concrete barricades are usually permanently installed while water filled barricades are easily moved from place to place when emptied of their ballasting water or sand. This makes them ideal for temporary uses such as traffic redirection for construction.
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