ZEVs and near-ZEVs may exceed the state's gross vehicle weight limits by an amount equal to the difference of the weight of the near-zero emission or zero emission powertrain and the weight of a comparable diesel tank and fueling system, up to 2,000 pounds. A ZEV is defined as a vehicle that produces no criteria pollutant, toxic air contaminant, or greenhouse gas emissions when stationary or operating. A near-ZEV is a vehicle that uses zero emission technologies, uses technologies that provide a pathway to zero emission operations, or incorporates other technologies that significantly reduce vehicle emissions. (Reference California Business and Professions Code 12725 and California Vehicle Code 35551)