THE EUROPEAN Commission is threatening legal action against France, Germany, Luxembourg and Denmark, for failing to implement key European Union road safety rules.

Brussels has given them two months to announce plans to deal with the problem, or face a possible case at the European Court of Justice.

This row centres on two directives ordering vehicle roadworthiness tests, including spot checks on speed limiters and exhaust emissions.

The Commission claims France and Denmark have failed to introduce directive 2003/26/EC on technical roadside inspections of commercial vehicles.

And it says Germany, Luxembourg, and Denmark again, have failed to technically update Directive 96/96/EC on roadworthiness tests.