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Emission Test Cycles

New York Composite Cycle

Time-speed data points

The New York Composite (NYComp) cycle is a chassis dynamometer test for heavy-duty vehicles representative of actual driving patterns in New York City. The test—also known as the New York Bus Composite (NYBC) cycle—is a compressed version of the US EPA “unfliltered bus test cycle”.

Vehicle speed over the duration of the NYComp test is shown in Figure 1.

Figure 1. New York Composite Cycle

The following are selected parameters of the NYComp cycle:

  • Duration: 1029 s
  • Total driving distance: 4.06 km (2.52 mi)
  • Maximum speed: 57.92 km/h (36.0 mph)
  • Average speed: 14.25 km/h (8.85 mph)
  • Average speed without stops: 20.0 km/h (12.43 mph)
  • Maximum acceleration: 5.41 m/s2
  • Average acceleration: 0.48 m/s2
  • Number of stops per km: 4