What are those three legged tyre puncture things called

[Shox Dr]

What about making something like dragons teeth ramps?

Those are to stop vehicles form going in the wrong direction.

I want to stop vehicles from going in any direction

 

[Hitch]

You want some of them pop up bollards

Stopped me boss going in any direction

 

[Angusdog]

???

Linky please

We call 'em 'Z nails' (in NZ ), not sure what they'd be called in Albion.

 

[Tigman]

Ive actually welded up some of those in Stainless Steel , Catsclaw International ltd , good bit of kit !

 

[octo0072000]

cats claw

good site don't about the fact it lets you download all the spec's though

military cats claw

http://www.catsclawinternational.com/Military_Brochure/Military.qxd.pdf

 

[pidgeon chit welder]

Kaltrops ?
The ones I've used were linked into in a long chain that could be anchored across a road and pad locked in position at night . or just strung out and pulled across the road by hand using a thin rope .
made of high tensile 1/4 inch steel bar and carefuly welded when laid the upper spike was about three inches to the top .. they stopped cars , lorries , trucls and motorcycles .
Later adjustments had barbs in the tangs so they stuck in the tyres and were rolled up around the wheels trearing the tyres to shreds.
I'll see if I can get a piccy for you .

 

[MrLeadfoot]

One of the local b*****s in Mansfield uses these

I was not happy!

 

[rich r]

Yes, I've seen things like that on a green lane once. Reported the incident to the council's Rights of Way Officer and they replied the next day saying they'd been out to investigate and cleared several more further down. They have a legal right to track down people preventing access on rights of way, but I don't know if they ever prosecuted whoever it was that didn't like people driving on that track (which is clearly marked on the Definitive Map as a vehicular right of way).