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Public-images-osm logo.svg barrier = spikes
Parking strip.jpg
Spikes on the ground preventing unauthorized access. Show/edit corresponding data item.
Group: barriers
Used on these elements
may be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: approvedPage for proposal

Use the tag barrier=spikes for a  Spike strip on the ground that prevents unauthorized access. They can also be removable e.g. after payment in a garage.

How to map

Simply add the tag barrier=spikes to a node node where the spikes are.

You should also add further tags to more fully specify what kinds of vehicle or foot traffic have reasonably unhindered access using access=*.