This enables us to help government agencies, non-government bodies and users to make decisions to improve air quality based on factual data.
Precise measurements of real-world emissions
We conduct most of our real-world measurements using the Portable Emission Measurement System (PEMS) and the smart version of the system, called Smart Emission Measurement System (SEMS), which we developed in-house. We use these systems to conduct daily measurements of both emissions and driving behaviour. Thanks to this data, we have access to accurate real-time information on emissions in all conceivable situations and over long periods of time.
The data makes an important contribution to understanding the conditions under which harmful emissions and CO2 production are at their highest (or lowest). We use this knowledge to advise government agencies on how to improve air quality through source-based policies, such as European emissions legislation, national incentives, local environmental zones and traffic management measures. NGOs and environmental organizations use our measurement data too.
Technology, driving behaviour and legislation
We compile an accurate picture of real-world emissions based on sources, relationships, vehicle technology, driving behaviour, legislation and the conditions under which hazardous emissions are produced. We also gather the same data on ships and mobile machines. This information reveals which vehicles are cleaner than others and under which conditions, and we can also provide recommendations on changing driving behaviour. Our recommendations on which buses to use as part of inner-city public transport tenders have had a major impact on local air quality.
Advice to consumers and manufacturers
The next step is to monitor much larger numbers of vehicles using relatively simple measuring devices such as SEMS. Owners of fleets of vehicles (such as government agencies, businesses and lease companies) and consumers can have our measuring devices installed in their vehicles. These enable us to gather vast quantities of measurement data on various types of private and commercial vehicles and under a wide range of conditions. This drastically increases the amount of information in our database and so improves the models with which we predict emissions and calculate scenarios for the future.
In the future, we will be able to tell individual consumers precisely which vehicles are the cleanest and most efficient under normal real-world conditions, and how they can influence this with their driving behaviour. Vehicle manufactures can use our data to optimize their emission reduction systems.
Real-time insights obtained from various sources
We can use data obtained from sensors in cities and along motorways which are integrated in roads, traffic lights, cameras and the latest vehicles to provide visual and real-time information on congestion, traffic flows, noise pollution and emissions of hazardous substances. Municipalities can use our Urban Dashboard to gain continuous and real-time insight into all factors that influence air quality, which can be predicted based on simulations of traffic management measures or the implementation of environmental zones.
Emission factors for road traffic
The emission factors for road traffic are official estimates of vehicles’ average real-world emissions, broken down by type of vehicle, Euro class, type of road and traffic conditions. In the Netherlands,...
Measuring the emissions of powered two wheelers
Mopeds and low-speed mopeds have relatively high exhaust gas emissions. In urban areas, their emissions per kilometre exceed those of petrol cars in almost every respect. Mopeds generally have better...
Emissions of particulate matter from diesel cars
Clean air is vital to health. Air quality can be improved by cutting road vehicle emissions. TNO has been commissioned by the Ministry of Infrastructure and the Water Management to conduct an In-Service...
Random Cycle Generator
European vehicle emission tests are to be performed on the road as much as possible, in the near future. A fallback option, for example, if no mobile measurement equipment is available, is testing on...
EnViVer: model traffic flow and emissions
With EnViVer you combine results of traffic simulation software with emission models. This enables you to predict and to study the environmental impact of traffic. Both for existing and modified/future...
Measuring the emissions of trucks and buses
The Dutch government is committed to reducing the fuel consumption of trucks and buses, as well as their pollutant emissions. In order to obtain objective data, TNO has been commissioned by the Ministry...
Reducing Greenhouse Gas Emissions in Commercial Road Transport
Cooperation is key The commercial transport sector is facing a major transition. It must accommodate transport demand growth, and yet achieve climate goals. This requires the improvement of transport...
Measuring the emissions of non-road mobile machinery
In addition to measuring emissions of road vehicles such as trucks, vans and passenger cars, TNO is committed to measuring the real-world emissions of other vehicles and mobile machinery. Excavators,...
Addressing elevated vehicle emissions in Flanders
Recent TNO rapports as annexes to letter of Ministry of Infrastructure and Water management to the Dutch Parliament