Hi Dave,I have the same problem, large vehicles delivering or picking up from the many mills I pass each morning. It takes me an hour to travel 4 miles. I have tried other routes, but they are as congested. I don't think there are any sensible answers. So, sorry I only have daft ones. You could have high wheel base lorries and drive underneath them. Or you could have a let down ramp to let you drive over the top. Or you could set up deliveries/pick ups only to take place at nights. Or you could have designated large vehicle routes, leaving other roads for the rest of us. But large lorries no matter what they do are hard to argue with - they are much bigger than we are!
Pat