"This line was the first project in India developed as a public-private partnership (PPP) under the government’s..." (Luczak, 2023) 

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References:
Luczak, Marybeth. (2023, Mar 24th) Wabtec Lands Brake System Order from Alstom. Retrieved from Railway Age: https://www.railwayage.com/mechanical/wabtec-lands-brake-system-order-from-alstom/?RAchannel=news