New traffic speed cameras have been installed on Interstate 235 through Des Moines. The cameras are focused on all four lanes of eastbound traffic along I-235 between 56th Street and Polk Boulevard.

They could catch motorists from around the state as many Iowans use I-235 when they visit or pass through Des Moines. The new cameras will start sending out warning notices to speeding drivers on Monday morning. A one-month grace period will end on September 28, when citations will be issued to motorists speeding at the location.

The speed limit in the area is 60 miles an hour. Police say citations will be issued to those going over 70 miles an hour. Des Moines installed a host of red light and mobile speed cameras around the city in early June. Traffic cameras are used in at least six other Iowa cities.