Heading East towards Chelsea, just as you come over a very small hill entring the town on Hwy66, the speed limit drops immediately just before, during and after the small hill. Beware of the short mound of a hill it looks safe but you cannot see over it in time. Very deceiving and the seed limit is reduced from 60/70mph to 45 to 40 to 35 withing a 1/4 to 1/2 mile.