Indicated are the numbers of each Certificate of Convenience and Necessity issued by the Public Service Commission of Indiana.
Whiting to Highland - From 119th & Indianapolis to Ridge & Kennedy primarily via Kennedy (PSCI Certificate 331M)
Gary to Michigan City - From Gary CSS&SB station to Michigan City CSS&SB station primarily via Dunes Hwy (US 12) (PSCI Certificate 340M)
Hammond to Cedar Lake - From Hammond CSS&SB station to Cedar Lake primarily via Calumet (PSCI Certificate 342M)
Gary to Hobart and Valparaiso - From Gary CSS&SB station to Valparaiso interurban terminal at Lincolnway and Franklin primarily via Old Ridge Rd and Yellowstone Trail (PSCI Certificate 519M)
Gary to Merrillville and Valparaiso - From Gary CSS&SB station to Valparaiso interurban terminal at Lincolnway and Franklin primarily via Broadway and Lincoln Hwy (PSCI Certificate 520M)
Hammond to Valparaiso - From Sibley & Morton to Valparaiso interurban terminal at Lincolnway and Franklin primarily via Kennedy and Ridge Rd and Yellowstone Trail (PSCI Certificate 521M)
Gary to Hobart - From Gary CSS&SB station to Hobart PRR station primarily via Dunes Hwy and Pine St (PSCI Certificate 522M)
Gary to Lafayette - From Gary CSS&SB station to Lafayette primarily via US 231 (PSCI Certificate 523M)
Hobart to Deep River - From Chicago & Main via Ainsworth (PSCI Certificate 588M)
The certificates were cancelled for the Whiting to Highland route in 1930, and for the remaining routes in 1931. Though it is not known when the Lafayette route was discontinued or sold.
1933 - Crown Point rail line replaced with buses.
1938 - Valparaiso rail line replaced with buses.
1939 - Hobart rail line replaced with buses.
1950's - Bus service to Valparaiso discontinued.
1956 - Gary Railways reorganized, with Gary Transit Inc. formed to operate city bus service, and Gary Intercity Lines Inc. formed to operate interurban bus service.
1971 - All bus service outside Gary discontinued.
1975 - Gary Transit becomes publicly owned Gary Public Transportation Corporation.
1996 - Gary Public Transportation Corporation introduces bus routes to Hammond and to Crown Point.
2007 - V-Line introduces local bus service in Valparaiso, along with connecting service to NICTD rail line.