I'm with John on this one. I will always say thanks if someone asks for a ticket and will always say goodbye/thanks to anyone who is getting off and says thanks. The problem is it is a viscous circle as the public has the general perception of drivers that they are rude and do therefore not acknowledge them which in turn leads drivers to deem passengers as rude and not acknowledge them as they think why should I bother. As has been said, in reality, most drivers are top blokes who would acknowledge someone who spoke to them.
What you also have to realise is that we can't (or at least shouldn't) have a chat with someone whilst driving as if you have a DQM and they see you being distracted whilst you are driving then it will be a chat with the boss at the very least.
What you also have to realise is that we can't (or at least shouldn't) have a chat with someone whilst driving as if you have a DQM and they see you being distracted whilst you are driving then it will be a chat with the boss at the very least.