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crobinson May 05, 2020 11:10 AM
Hello,

Within the "A.3.b.i-iv Road Transport Appendix 4 Emission Factors 2019" spreadsheet , why for Euro 5 SCR and Euro 6 HGVs do the downhill gradient calculations increase to a peak from the flat and then decrease, whereas for everything pre-Euro 5 there is a steady decrease in emissions downhill?

Also why for some speed, load, gradient combinations do the formula give negative EF's?

Thanks

Chris
Replies (1)
EEA May 11, 2020 02:20 PM
Dear M. Chris Robinson,

Thank you for contacting the European Environment Agency (EEA).

We would suggest that you address your question to support@emisia.com. They are the developers of the COPERT5, which is the methodology and the database behind the Road Transport chapter.

With kind regards,
EEA Enquiry Service
 
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