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Consider a typical private parking garage for a condominium or apartment building.

There is currently a typical garage gate that opens and closes (slowly) to allow vehicles to pass safely through the gate.

What is the optimal method for preventing access into this garage by pedestrians/foot traffic, but ensuring the same safe entry/exit for vehicles?

The goal is to make sure people cannot enter/exit through the same gate that vehicles may enter/exit.

Practically implementable solutions only, please. Cost need not be a factor.

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closed as too broad by APrough, Alconja, Beastly Gerbil, Gareth McCaughan, Mithrandir Jan 19 '17 at 21:13

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ When reading this question, I assumed I was looking at Home Improvement SE. $\endgroup$ – Glorfindel Jan 19 '17 at 20:18
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    $\begingroup$ This isn't really a puzzle, is it? $\endgroup$ – Deusovi Jan 19 '17 at 20:29
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    $\begingroup$ Even if this is a puzzle (which I feel is too broad), if someone actually comes up with a plausible solution, please tell me how Autobots fit into this situation... $\endgroup$ – APrough Jan 19 '17 at 20:40
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    $\begingroup$ Only allow entry through a tunnel packed with angry bees? $\endgroup$ – Neil W Jan 19 '17 at 20:49
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    $\begingroup$ RIP anyone with a convertible or open windows ... $\endgroup$ – Matt Jan 19 '17 at 21:36
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Tunnel Car Wash

This system allows a car to safely pass through a series of industrial-grade cleaning equipment. Parts of a car wash typically include arrays that spray the vehicle with pressurized liquid, or large motorized brushes that wipe the car's exterior.

While this is safe for an automobile, it is a very bad method of entry or exit for a pedestrian.

If the garage is privately owned, and cost is not a factor, then the owner can hire a contractor. The contractor will then figure out a way to install the car wash system next to the gate.

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    $\begingroup$ Great answer. This is the type of solution that could actually be useful. Thank you. $\endgroup$ – Dean Rusmor Jan 19 '17 at 21:44
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Have a pressure gate.

We have this at my school, there is a white square in front of the gate which the vehicle drives onto. This is a pressure plate, and if the vehicle is on it it will identify the weight and the gate opens.

Even if many people stood on it, it would not open (yes we tried that).

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  • $\begingroup$ Curious if this also excludes motorcycles/mopeds, assuming they're allowed in the garages as well. $\endgroup$ – BradC Jan 19 '17 at 20:22
  • $\begingroup$ @BradC one teacher has a motorcycle and it still works for him $\endgroup$ – Beastly Gerbil Jan 19 '17 at 20:23
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    $\begingroup$ Thanks for the reply, @Beastly Gerbil. One possible issue here is that a human could make it through the gate as a "tag along" to a vehicle already entering or exiting. $\endgroup$ – Dean Rusmor Jan 19 '17 at 21:52
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A metal detector ought to do the trick.

See:

https://en.wikipedia.org/wiki/Induction_loop#Vehicle_detection

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    $\begingroup$ Er couldn't a citizen just walk through if they carried some metal on them? $\endgroup$ – Beastly Gerbil Jan 19 '17 at 20:26
  • $\begingroup$ @BeastlyGerbil The sensitivity can be adjusted. That precise scenario is described in the wiki tab too. $\endgroup$ – John Jan 19 '17 at 20:28

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