Those are stingers used to catch nefarious car jacking criminals or
operate temporary road blocks in down town Baghdad. Are there examples
of permanent ones? I'd have thought a more obvious barrier, such as a
fence would be built if it were to be long term.
The 'one-way' spikes are often used in combination with lifting barriers
so: barrier=lift_gate;spikes.
Dave F.
On 14/04/2015 10:45, Martin Koppenhoefer wrote:
2015-04-14 11:35 GMT+02:00 Dave F. <[email protected]
<mailto:[email protected]>>:
IMO oneway on the node is inconclusive as a node has no direction
& it should already be on the way.
+1, but the spikes are oneway spikes, so I think we should have this
distinction at the top level (i.e. barrier-key). It is fundamental
that you can cross from one side and are hindered from the other.
There are also omnidirectional spikes like this type elsewhere:
http://www.indosoftcorp.com/image.php?pid=50 (that's a portable version)
Cheers,
Martin
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