HHP-8 Bombardier-Alstom twin-cab unit Profile and Models
        AMTK 663 at Odenton, Maryland in 2012. ©Ryan Stavely
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				 The Bombardier–Alstom HHP-8 (High Horse Power 8000) is a type of twin-cab electric locomotive manufactured by a consortium of Bombardier Transportation and Alstom for Amtrak and MARC. The locomotive's electrical drive technology is directly derived from the SNCF BB 36000 manufactured by Alstom. A small class size and reliability problems with correspondingly high per capita maintenance and replacement costs led Amtrak to retire all of its HHP-8s after only a decade in service. MARC initially made the decision to retire their HHP-8s, but later opted to refurbish their fleet from 2017 to 2018.  | 
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				 Type of Locomotive  | 
			Electric | 
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				 Builder  | 
			Bombardier, Alstom | 
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				 Build Dates  | 
			1996 to 1998 | 
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				 Total Built  | 
			21 | 
| 
				 Tractive Effort  | 
			71,240 lbf | 
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				 Power Output  | 
			8,000hp | 
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				 Top Speed  | 
			135 mph | 
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				 Wheel Configuration  | 
			Bo-Bo | 
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				 Operated By  | 
			
				Amtrak MARC  | 
		
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				 Main Duties  | 
			Regional Passenger | 
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				 In Service Until  | 
			
				2014 (Amtrak) Present (MARC)  | 
		
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				 Surviving Examples  | 
			A handful still in service | 
                            
                        
                                        
                                            Amtrak