What countries have drug-driving controls??

[Lehendakari]

In SWIM's country recently police will do test to drivers in order to detect not just alcohol, also cannabis, cocaine, amphetamine. Goverment approved a very restrictive law. According to the law if you are busted you can go straight to jail up to 2 years.

The conversation was on the tv news the other day and I could hear the police saying to the reporter:

"It's positive on methamphetamine so this individual was driving under the influence of something called ecstasi "" ???

I assumed that (Meth)Amphetamine and mdma would both get postive resuts so the cop said XTC cause he saw the pill.

Anyway, anybody knows about this cops' drug test? What can they detect? I guess they have tests for the main ones, cannabis, cocaine, amphetamines but i can't find specific info about it.

They are actually testing already in conflictive point and said that thousands of drivers can lose their license and could get imprisioned when the law can be applied. Is there any law like this in your country?