The article and linked study provides no actual pollution data, and plenty of generalized-but-misleading data about "diesel trucks". Quotes from the study's au

The article and linked study provides no actual pollution data, and plenty of generalized-but-misleading data about "diesel trucks". Quotes from the study's author in the article seem to intentionally conflate the very clean small vans used by companies for deliveries with full-sized semi-tractors: “They’re brought to your door generally by a truck that’s burning diesel, emitting harmful pollutants into the communities that it’s passing through.” This is followed by a paragraph about the pollution caused by "diesel trucks", implying that the Ram Promaster that dropped off your cheerios is giving your kids asthma. The study itself doesn't actually mention the delivery vehicles when talking about pollution, instead focusing on diesel-fueled freight trucks and buses (for... reasons?), and (correctly) points out that those vehicles are the ones causing the NOx and particulate pollution. Sigh...