US: Heavy-duty: CTA US: Heavy-duty: CTA Overview The CTA (Chicago Transit Authority) test cycle is typically used for dynamometer aging of engines, engine components, or emission control devices. Contents OverviewDescription Categories United States Test cycles Description The graph and linked torque/speed data file represent a 5 minute trace, which can be modified to suit the testing laboratory. The cycle is usually run continuously, multiple times in succession, for a period of tens or hundreds of hours. CTA Cycle
