The Handbook of Emission Factors for Road Transport

We are pleased to announce the release of HBEFA Version 5.1!

Registered and new users can obtain the new version by filling in the registration form on this website under SOFTWARE > GET THE HANDBOOK.

Version 5.1 is a major update. All contents of the Handbook have been updated. Version 5.1 represents a substantial extension of contents compared to previous versions, with additional pollutants, subsegments, and about five times as many base emission factors as in HBEFA 4.2. Furthermore, the new version is implemented as a user-friendlier Python-based client-server solution (as opposed to the previous MS Access-based versions).

An overview and documentation of the updated aspects is available under METHODOLOGY > REPORTS > “HBEFA 5.1 Update Documentation”

Please see the updated help file on this website under SOFTWARE > VERSIONS >HBEFA 5.1 for a quick start with the new application.

Unfortunately, the French country data inputs are slightly delayed. They will be updated in a few days. Since the new application is a client-server solution, it will not need to be downloaded or installed afresh after the update. For the moment, it is just not possible to calculate results weighted with a fleet composition for France.

The guidelines have been developed to

- promote consistent application of the HBEFA Traffic Situation between users and use cases

- to make methods and experiences developed over time available to all HBEFA users

- and to save users time.

The Guidelines are available on the website of the German Environment Agency (UBA-DE): www.umweltbundesamt.de/publikationen/hbefa-traffic-situations

The beta tests have been concluded by end of August. We have received very positive feedback. A few bugs have been identified that we are going to fix in the coming days.

The most important reason for postponing the publication date is that the general level of the new non-exhaust emission factors has been questioned - an issue that we want to investigate further before we publish the new version.