CTA Lauds Report Calling for Tampering Enforcement, Champions Trucking’s Enviro Record Wednesday October 30, 2019 | Environment & Fuel, News Releases, Technology & Equipment CTA applauded a recent University of Toronto study calling for a crackdown on tampering of heavy truck emissions control technology but also pointed out the trucking industry should be proud of being the only freight mode that has virtually eliminated air pollutants from diesel engines and is the only one to use mandated carbon-reducing equipment.