I am a reletively new rider and I need to brush up on my rider etiquete rulles in terms of who I do and do not nod to. I ride a KTM990R so I understand the rules are as follows: I nod to all dirt bikes/adventure bikes I nod to all road bikes with the exception of scooters and harleys So do Harley riders only nod to other harley riders? Do scooter riders nod to anyone? posties? Is this correct? I find it all a bit strange really. I think a nod is common curtesy but it really pisses me off if someone doesn't nod back - kinda like the Shaolin monk Pai Mei off Kill Bill 2.