Addressing elevated vehicle emissions in Flanders
A novel study for the Flemish Environmental Agency on vehicle emissions has been carried out by TNO, together with partners Vrije Universiteit Brussel in Belgium and, in part, HEAT in the USA. In the first part of this study an analysis of the EU and Belgian legal framework was performed. This was used to determine the possible strategies that the Flemish Environmental Agency can implement to detect and address problems with vehicle emissions.
Remote sensing to detect and prevent elevated emissions of road vehicles
In the second part of the study, a remote sensing system, developed by HEAT, was used to measure the on-road emissions of a large sample of vehicles. Measurements were performed at 5 locations in Flanders and this was the first time such measurements were performed under highway conditions. Many new insights into the on-road emission performance of vehicles were gained and the main conclusions were:
- A small group of vehicles with high emissions account for a disproportionate share of total emissions.
- Remote sensing can effectively detect problems (manipulations, failures, maintenance problems) with exhaust after-treatment systems, which increases the effectiveness of police and inspection tasks.
- Using a remote sensing system during roadside checks can substantially increase the detection rate of emission problems.
- Detecting problems with diesel exhaust after-treatment systems using remote sensing is most effective on highways where emission levels are normally low.
- Remote sensing campaigns conducted in the past on urban and rural roads do not provide a complete picture of vehicle emissions performance.
- The effect of ambient temperature on vehicle emissions is limited and observed differences can be traced back to rush hours in the morning and afternoon as underlying cause.
Safe and sustainable urban mobility
We develop and research smart, innovative measures and integrated solutions for the domains of mobility, liveability, and safety.
Sustainable vehicles and research into sustainable powertrains
80% reduction in greenhouse gas emissions from road transport. That is the goal for 2050. Find out how we help with innovative solutions.
TNO research on powertrains
Modern means of transport, from passenger cars to heavy road and waterborne vehicles, must comply with increasingly stringent emission regulations and greenhouse gas targets.
Research on integrated vehicle safety
TNO is recognised by OEMs and TIERs worldwide as a valuable knowledge partner with unique expertise, tools, and facilities. Activities within the Integrated Vehicle Safety (IVS) research department focus on improving the functional safety of vehicles and preventing fatalities and serious injuries by developing integrated safety solutions, which are robust and reliable under all conditions.
Sustainable transport and logistics expert group
For sustainable mobility, we research the emissions and energy use of vehicles and vessels. We also analyse traffic flows to make them smarter and more efficient. In logistics, we help to accelerate sustainable innovations by organising pilots. Our insights offer policymakers and businesses options for action, for today and tomorrow.