[5] AnsaldoBreda delivered 50 P2550 Light Rail Vehicles (LRV) to Metro between 2006 and 2011 for use on the newly expanded Gold Line.

Delivery of the vehicles was approximately three years behind schedule, and Metro claimed they were overweight; thus, the agency chose not to exercise their option to purchase more beyond this initially contracted order.

[6][7] However, with multiple light rail lines under construction or in planning and the P865 trains approaching their end of life, Metro anticipated a substantial need for LRVs and thus requested bids for a new contract, for vehicles which were dubbed the P3010 series.

[13] Final assembly work was being performed in hangar space the company leased in Palmdale from Los Angeles World Airports.

In January 2021, the final train of the contract was delivered by Kinki Sharyo, with the $1.02 billion project completed on time and on budget.