This.

Big ships run high sulfur "bunker diesel" as it is the cheapest fuel possible. The ships spend most of their time in international waters, where there is no emissions regulation.

Diesel Trucks have catalytic converters and newer trucks treat their exhaust with Add Blue to catalase the nitrate emissions. There are efforts to regulate emissions of micro-fine soot particles; which contain the odd radioactive Carbon 14 particle.

CO2 emissions can be offset by forestry efforts. Sulfates and Nitrates cause acid rain. Micro-fine soot is radioactive and causes cancer, especially in big cities where the density is high.

I am not a fan of DPF filters, it is a stupid way to regulate exhaust emissions and is a ploy to force obsolescence of older trucks. Still, emissions testing and regular rebuilds are desirable. You can rebuild old trucks forever with the correct motivation.