Is a policeman allowed to detain without a warrant a driver who committed an offence in front of him?

1. Not under any condition
2. Yes, but only under a court certificate
3. Correct answer: Yes, if the driver doesn’t give his name and address or doesn’t present his license as required
4. Yes, only if the driver committed an offence that actually endangered road users

WhyA police officer may detain a driver without a warrant if the driver won't give a name and address or won't show a license as the law requires.