One of the new SC-44 Charger locomotives that will be assigned to Midwest Corridor trains was tested between Chicago and Milwaukee on Wednesday.
It was the first test of a Charger locomotive in the Midwest. Testing has been conducted previously on the east and west coasts.
Two Chargers, Nos. 4611 and 4604 arrived in Chicago late last month.
Siemens built the Chargers at a factory in California as part of an order placed by the departments of transportation of Illinois, California, Michigan, Missouri, Washington and Maryland. The order was for 69 locomotives of which Illinois purchased 33.
Most of the Chargers in the Midwest are expected to operate on corridor routes radiating from Chicago.
Further tests of the Chargers are expected to be performed on other Midwest routes.