Q: How can a police officer know if a driver is impaired by drugs? With alcohol there are roadside tests like walking a line, ...

These are known as the World Harmonised Light Vehicle Testing Protocol (WLTP) and Real Driving Emissions (RDE) regulations. You’ll be familiar with WLTP as this is the test used to provide the ...

Three different trucks, three different powertrains. We wanted to know: What gas mileage do they get in real-world driving?

This is therefore not a true real-life driving exam, so the vehicle was not issued its very own driving license even though it passed, but the story (and the accompanying video) certainly achieves ...