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[–] 10 points 1 month ago

We have a bunch of stainless steel or aluminum bollards in San Diego that have a simple key and lock system. Disable the lock and the whole bollard slides down into the pavement and allows essential vehicles through. It takes all of about 30 seconds of planning to not even really slow down the vehicles, and have the bollard back in place as soon as they are through.

I have no clue what they cost though.

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