If you describe someone's opinions or policies as middle-of-the-road, you mean that they are neither left-wing nor right-wing, and not at all extreme. Consensus need not be weak, nor need it result in middle-of-the-road policies
Middle-of-the-road music is pop music which a large number of people like because it is pleasant and does not sound extreme or unusual. The abbreviation MOR is also used. I like cheerful, uplifting middle-of-the-road pop
If you describe something or someone as middle-of-the-road, you mean that they are ordinary or unexciting. I actually don't want to be a middle-of-the-road person, married with a mortgage