Regulators in California have announced they are withdrawing regulations that would phase out diesel trucks and would require truck drivers and trucking companies to buy what regulators say would be ...

Do government environmental regulatory agencies have a 'combustion bias'? HDT asked Clean Energy vice president Chad Lindholm ...

New U.S. Transportation Secretary Sean Duffy signed an order on Tuesday directing U.S. regulators to rescind landmark fuel ...

Toyota subsidiary Hino Motors has agreed to pay $1.6bn (£1.3bn) and plead guilty to deceiving US regulators about the amount of emissions produced by its diesel engines. The truck company will also be ...