Uppdatering EVA-kalkylen: nya emissionsfaktorer beräknade med PHEM


The current European emission model, HBEFA, specifies emission factors for different driving patterns and vehicle types. This model does not study the example of individual intersections. This study utilizes the same microscopic model, PHEM (www.tugraz.at), as HBEFA to calculate also intersection emissions and emissions of links without intersections. With PHEM the release of four vehicle types (cars fueled by diesel or petrol and trucks with and without trailers) calculated for several different road classes according to the division still used in the models EVA and CAPCAL. To illustrate the emissions of intersections calculations for emissions for a quick stop to rest and then the withdrawal of the original speed is also presented.

In addition to a description of the method of how the new emissions have been calculated in the new tables also include suggestions of future updating of the model. In addition, reported the conclusion of tests and comparisons to facilitate the transition from the current basic model VETO to PHEM. The calculations show that previous assumptions about the significantly lower emissions of vehicles have not been met, and that the vehicle speed impact on emissions has changed., We suggest that more vehicle types will be included in the model at the next update.

The model simulates the CO2, SO2, fuel consumption, HC / VOC, CO, NOx, NO2 and exhaust particles, but the report only presents fuel consumption. However, all other parameters can be obtained directly from the authors. The report first provides a brief description of the different emission models, how the calculations are done up to now and then how adaptations and updates led to the resulting emission factors.



Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.



Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018

VTI’s Senior Research Leader Ulf Sandberg has been presented with the TTI Lifetime Achievement Award 2018 for his work on research into tyres and road surface.


Steps need to be taken to increase traffic safety of automated cars

Several steps are necessary to ensure that automated and connected cars will lead to increased traffic safety – everything from ensuring that technology takes vulnerable road users into account, to new forms of driver training. This has emerged in a position...


FALCON examines challenges in the transport sector

VTI is one of several important partners in the major FALCON project*, whose purpose is to create knowledge and insight regarding the transport sector. In an initial subproject, VTI has produced a manual on transport, logistics and multimodality.


VTI joined research cooperation in China

In December 2017 VTI became a member of China-Sweden Research Centre for Traffic Safety (CTS).


Swedish German research collaboration on Electric Road Systems

The project “Swedish-German research collaboration on Electric Road Systems” (CollERS) has now officially started. The goal of the project is to increase the common knowledge around Electric Road Systems by cooperation between Germany and Sweden and to...


Electric Road Systems Conference 2018

After a successful first conference in June 2017, the Swedish research and innovation platform for electric roads is arranging the second dedicated International Conference on Electric Road Systems (ERS) June 13th and 14th 2018.