IMRR meaning in Regional ?

Answer: What is Illinois and Midland Railroad mean?

The Illinois and Midland Railroad (reporting mark IMRR) is a railroad in the U.S. state of Illinois, serving Peoria, Springfield and Taylorville. Until 1996, when Genesee & Wyoming Inc. bought it, the company was named the Chicago and Illinois Midland Railway (reporting mark CIM). It was once a Class I railroad, specializing in the hauling of coal. At the end of 1970 it operated 121 route-miles on 214 miles of track; it reported 255 million ton-miles of revenue freight that year.

reference

Full Form	Category
Institute of Magnetic Resonance Research	Academic & Science
Insurance Medical Records Review	Business
Initial Maintenance Requirement Report	General
Indonesia Muda Road Runner	General
Inspection Maintenance and Repair Record	General
International Metrology Resource Registry	International
Interracial Multicultural Romance Readers	Internet
Interim Medication Regimen Review	Medical
Illinois and Midland Railroad	Regional
Illinois and Midland Railroad, Inc.	Regional