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Emission Test Cycles

City Suburban Heavy Vehicle Cycle & Route

Data points: Cycle (speed vs. time) | Route (speed vs. distance)

The City Suburban Cycle (CSC) is a chassis dynamometer test for heavy-duty vehicles developed by the West Virginia University. The CSC is also abbreviated as CSHVC (City Suburban Heavy Vehicle Cycle).

The test is also available in a “route” version—the City Suburban Heavy Vehicle Route (CSHVR)—where the vehicle speed is given as a function of travelled distance, rather than time.

Vehicle speed over the duration of the CSC driving cycle is shown in Figure 1.


Figure 1. City Suburban Heavy Vehicle Cycle

The following are selected parameters of the CSC cycle:

  • Duration: 1700 s
  • Total distance: 10.75 km (6.68 mi)
  • Maximum speed: 70.55 km/h (43.84 mph)
  • Average speed: 22.77 km/h (14.15 mph)