First of all, I've already tried to do my research and tried to get all the info I'm asking for myself (which obviously didn't work).
I want to know if CAN or OBD(-II) are in fact mandatory in the US and/or EU and where I can find proof for that.
I keep finding info on CAN being mandatory in the US since 2008 and 2001/2004 in the EU. However, I think people confuse CAN with OBD. It makes sense since you want a mandatory diagnostic interface and not just a protocol you could use. Obviously, I have no proof for that.
I've already found legal documents of the EU which suggest that OBD is in fact mandatory (http://eur-lex.europa.eu/resource.html?uri=cellar:9ee5d16b-1a4a-4a72-ac90-5e3a0bb1d745.0008.02/DOC_1&format=PDF). However, there is no statement about the start of this rule.
Can someone enlighten me in this case?
Thanks a lot :)