How Portable Emissions Measurement Systems Work
15 Jul 2018, 08:02 UTC · By: Daniel Patrascu / PEMS is an externally mounted piece of equipment used by carmakers to test the emissions of their cars in real world driving conditions.
Study Calculates the Real Cost in Human Lives of Excess Diesel Emissions
16 May 2017, 14:53 UTC · By: Vlad Mitrache / There is a big discrepancy between the numbers shown by the official emissions tests and what happens in the real world, and it's calculated in human lives