whatilearned
Read more: https://en.wikipedia.org/wiki/Jersey_barrier
TIL those concrete dividers on highways and streets are called Jersey barriers. Originally invented in the 1950s for use in New Jersey, they were first poured in place but are now pre-made and modular or even plastic. Taller varieties are used as defenses outside US military bases.
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Most permanent ones are slipformed in place. They do have modular ones that are good for construction sites where you’ll be shifting traffic around every once in a while.
Jersey barriers are designed to have a vertical surface at the bottom for tires to rub against, then lean away so the side of your car doesn’t hit them. One issue is if you come through 10 years later and add a few inches of asphalt to the roadway, now there isn’t that flat surface, it’s just the angled surface, so a car tire can actually ride up the jersey barrier and flip the car.
I’ve always called them K-rails.
Interesting that New Jersey felt the need for anti-tank protective measures in its streets…
They’re pouring them in place as construction on I-26 around Columbia, SC continues. 😄
We called the tall ones T-walls/t-barriers overseas.
Huh that’s funny cause my brother smashed his $200k tour bus into one in New Jersey a few years back and totaled the van.
None of the military bases I was stationed at had these. Maybe you meant in a war zone?
Intended to flip over the car into its lane…
Faster you hit it more times you flip until you die