Slide (48 of 125)
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These are what we sometimes
call "New Jersey barriers."
They’re usually made of
concrete, and are often used
along interstate highways and at
construction areas. They operate
on the same principle as an
earth berm. When a tire strikes
this berm it tries to penetrate.
Since this is made out of a hard
material, usually concrete, the
tire cannot penetrate so it starts
the climbing action earlier. As it
starts climbing, if it doesn’t
have enough momentum to carry
it all the way over, the barrier
will redirect the tire back into
the roadway. You’ve probably |
| noticed black marks on these along the highways where large highway trucks have hit them. The tire tried to climb over, couldn’t get all the way over it, so these devices directed the trucks back into the lane of traffic. |
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