I have been pulled over a few times and feel that a lot of what officers say is script-like. For instance, on the two occasions I was pulled over, the mannerisms and dialogue were pretty much identical.

"You shouldn't be in the middle of the lane"

I show him rules stating I have a right to the road, I wasn't impeding traffic, the lane is substandard, and I am on a multi-lane with ample room for drivers to pass.

"Well, you can't slow down traffic."

This was very early in the morning (both times) with, again, two available lanes that are wide open for safe passing.

"It's unsafe for you. I'd advise the sidewalk."

I explain I feel safe, and regularly commute on these roads.

"Look, if it's easier I can give you a ticket."

It seems that what they do, at least here, is attempt to make you feel as if you are breaking laws. When you counter this with statutes, it's then a "safety concern." When you state you feel safe, it becomes a more threat-based exchange. Getting information is key, and bringing it up with a higher-up is great. If you somehow forget, you can always call dispatch with time, place, and unit and they will give you the information.

I would have to look at your laws, but where I am from, I am legally allowed full use of lane. Safety, I feel, is a personal issue. If you feel safe, than the officer really is pushing his own personal agenda on what his "safety" concerns are. As far as I know, mirrors aren't legally required. Being of a very small group of road-users it sometimes happens that people, including officers, have a certain prejudice against the normalcy of motor vehicle usage.