PBR meaning in Regional ?

Answer:

What is Patapsco and Back Rivers Railroad mean?

The Patapsco and Back Rivers Railroad (reporting mark PBR) was a Class III switching and terminal railroad, operating in Baltimore County. Owned for the majority of its existence by the Bethlehem Steel Corporation, the railroad primarily served Bethlehem Steel's Sparrows Point terminal area. MCM Management Corporation purchased the PBR, through their purchase of RG Steel corporation, and renamed the railroad the Baltimore Industrial Railroad (reporting mark BDR) in 2012.

reference

Full Form	Category
Poison Black Rose	Academic & Science
Precariously Balanced Rock	Academic & Science
Physics Based Rendering	Academic & Science
Puerto Barrios	Airport Code
Petroleo Brasileiro (American Depositary Receipts)	Business
Portland's Best Refreshment	Business
Power Booster Rod	Business
People's Blues of Richmond	Community
Playback and Record	Computing
Process Bill Register	Computing
Partition Boot Record	Computing
Peak Bit Rate	Computing
Program Counter Breakpoint Register	Computing
Periodic Buffer Reuse	Computing
Phone Book Read	Computing
PolkaBridge	Cryptocurrency
Pabst Blue Ribbon	General
Plant Breeder's Rights	General
Pacific Business Review	General
Patapsco and Back Rivers	General
Polarized Beam Reflectometer	General
Peripheral Benzodiazepine Receptor	General
Power Brake Booster	General
Parisienne Brougham	General
Party Bus Rentals	General
Paton's Brake Replacements	General
River Patrol Boat (Patrol Boat, River)	General
Professional Bull Riders	General
Packed by Removalist	General
Pokemon Battle Revolution	General
Python Build Reasonableness	General
Payment By Results	General
Physically based rendering	General
Physically Based Renderer	General
Plasmid Bacterial Recombination	General
Pabst Blue	General
Patrol Boat Riverine	General
Polished Bore Receptacle	General
Point Blank Range	General
Pelican Beach Resort	General
Purlin Bearing Rib	General
Perfect Breakfast Refreshment	General
Packed Bed Reactor	General
Personal Bike Routing	General
Program Budget Review	General
Pretty Bike Rider	General
Perspective Based Reading	General
Pebble Bed Reactor	General
Performance Based Regulation	General
Permit By Rule	Governmental
Professional Bull Rider	Jobs
Pathology Bearing Regions	Medical
Payments by Results	Medical
Peptide Binding Region	Medical
peribrachial region	Medical
Post-Birthing Room	Medical
Pre-Budget Report	Medical
Patrol Boat, River	Military and Defence
Policy-based Routing	Networking
Pinned Beam Roll	Physics Related
Patapsco and Back Rivers Railroad	Regional
Profesional Bull Riding	Sports
Professional Bike Rider	Sports
Professional Barrel Racer	Sports
Pace Balanced Rating	Sports
Professional Bull Riding	Sports
Pure Breed Racing	Sports
Prep Baseball Report	Sports
Pro Bull Riding	Sports
Price Book-value Ratio	Stock Exchange
Performance Based Ratemaking	Stock Exchange