AMR meaning in Regional ?

Answer:

What is Arcata and Mad River Railroad mean?

The Arcata and Mad River Railroad (reporting mark AMR), founded in 1854, was the oldest working railroad in California. It operated on a unique narrow gauge until the 1940s when standard gauge rails were laid. Service ceased in 1983 due to landslides. It is California Historical Landmark #842.

reference

Full Form	Category
Alumni Memorial Residences	Academic & Science
Alumni Memorial Residence	Academic & Science
Academy of Management Review	Academic & Science
Arno	Airport Code
Abbingdon Music Research	Business
AMR Corporation of Delaware	Business
Advanced Market Research	Business
American Medical Rescue	Business
Association For Mutual Reformation	Business
Association Management Resources	Business
Armour Group	Business
Annual Monitoring Report	Business
American Airlines (former)	Business
Applied Management Research	Business Management
Analytical Method Recovery	Chemistry
Antibody Mediated Rejection	Community
Adaptive MultiRate	Computer and Networking
Anisotropic Magneto Resistant	Computing
Acceptance Mask Register	Computing
Adaptive Multimedia Retrieval	Computing
Anti Malware Research	Computing
Adirondack Mountain Reserve	General
Ahh My Ride	General
Audio And Modem Riser	General
Advance Meat Recovery	General
Advanced Mulit Rate	General
Audi Magnetic Ride	General
Aston Martin Racing	General
Auto Moto Retro	General
Australian Motor Racing	General
Automotive Market Report	General
Absolute Maximum Rating	General
Alan Mann Racing	General
Automotive Marketing Roundtable	General
Airbag Module Romania	General
Auto Maintenance and Repair	General
Aston Martin Rapide	General
Annual Ministerial Review	General
Automated Meter Read	General
Additions Modifications and Replacements	General
Abstract Meaning Representation	General
Absolute Maximum Range	General
Automated Meter Readers	General
Authentication Methods References	General
Amr Mobile Ringtone	General
Automated Meter Reading	Governmental
Aliamanu Military Reservation	Governmental
Audio Modem Riser	Information Technology
Average Moving Range	Maths
Adaptive Mesh Refinement	Medical
Active Metabolic Rate	Medical
Automated Medical Record	Medical
antimicrobial resistance	Medical
American Medical Response	Medical
Arlington Medical Resources	Medical
Anti Materiel Rifle	Military and Defence
Army Management Review	Military and Defence
Auxiliary Machinery Room	Military and Defence
Average Message Rate	Networking
Amarakaeri	Regional
Arcata and Mad River Railroad	Regional
Atlantic Missile Range	Space Science
Automatic Meter Reading	Telecommunication