OKLAHOMA CITY (KAMR/KCIT) — New signage was installed along the US-412/Cimarron Turnpike that increased the speed limit of the road to 80 mph announced the Oklahoma Department of Transportation.

Oklahoma Turnpike Authority Executive Director Joe ... and A 10% increase on the Cimarron, Cherokee and Chickasaw turnpikes. The Gilcrease Expressway in west Tulsa won’t see a toll rate increase ...