The conversation was interesting. Perhaps because he was a department of transportation worker in his state truck on the job he was more restrained and polite. He really didn't 'get it' when we began our discussion but I was committed to not backing down and to remaining polite. For sake of brevity I paraphrased and condensed. He had several other arguments regarding his driving and behavior before he conceded the point and agreed I was riding where I was supposed to and that he could have just slowed and passed when it was safe. The fact that I quoted several sections of the state code to him might have had some effect. I think he figured out I knew what I was doing and being argumentative when he was in the wrong was no way to behave with a citizen. Anyway, maybe he will be just a little bit more careful in the future. I've got to say I left the encounter feeling much better than several other encounters I've had which degenerated into violent confrontations.