Oh, boy!
Where have YOU been?
They don’t actually contradict themselves anyway, just as a ticket related to “conditions” might not reflect the actual numbers on a sign.
“”The most popular law follows the Uniform Vehicle Code, which says a car driving below the “normal speed of traffic” should be driven in the right-hand lane. Because it indicates “normal speed” instead of saying “speed limit” a driver going above the speed limit but slower than most traffic is still in the wrong.””