Here is an automatic traffic barrier system that can be deployed to stop vehicles from passing and burst their tires in 2 seconds. The BULKHEAD lasts up to 10 days on battery. It weighs only 42kg and opens and closes in about 3 seconds.
More gadgets like this: here
The system lasts up to 400 unfold cycles on battery. It has a deployment length of 4.2 meters and wireless RC range of 150 meters.
[HT]
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