Turning off the main road on to S Sherman the speed reduces without warning to 30mph after slowing to around 40mph to make the turn. The sign is shaded under a large tree where a driver’s focus will be mainly on the left area to be mindful of cars/trucks that may enter the highway right after turning in. Avoid the turn into Manderson and take the 2 mile longer route on your way east. Yes, we were an out of state car (rental) and have no real cost effective way to challenge the situation. If the town were serious about safety and helping drivers avoid speeding they could simply move the sign towards the turnoff to make it more obvious. This small town seems to be more interested in getting the ticket revenue than safety.