The Kansas Highway Patrol will put an officer in one of the toll booths with a hand held LIDAR unit. The speed limits aproaching the toll booths is 30 MPH, and reaches back about 1.5 miles from the booths. The Topeka Police Department and the Shawnee County Sheriff office also set at the toll booths on the westbond side with the highway patrol running down cars an trucks for driving through the booths to fast with there K-Tag transponders. The speed limit is 10 MPH if you have one. Motor Carrier Enforcement officers also use the booths.