Passing the test is critical, but making these tests meaningful is even more important: "Some of the emissions measured in the certification cycle differed dram

Passing the test is critical, but making these tests meaningful is even more important: "Some of the emissions measured in the certification cycle differed dramatically from the real traffic emissions"[0]. [0] http://www.researchgate.net/profile/Luc_Pelkmans/publication/248319865_Comparison_of_on-road_emissions_with_emissions_measured_on_chassis_dynamometer_test_cycles._Transp_Res_Part_D_Transp_Environ/links/00b7d536b2ccec15fe000000.pdf http://www.researchgate.net/profile/Luc_Pelkmans/publication...