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Emission Test Cycles

Orange County Bus (OC BUS) Cycle

Time-speed data points

The Orange County Bus Cycle is a chassis dynamometer test for heavy-duty vehicles. It has been developed by the West Virginia University (WVU), based on the driving patterns of urban transit buses in the Los Angeles, California area. The OC Bus cycle should not be confused with the Orange County refuse hauler cycle, which also has been developed by the WVU.

Vehicle speed over the duration of the cycle is illustrated in Figure 1.

Figure 1. Orange County Bus Cycle