2015DB31/ 357-2015 Limits of Exhaust Pollutant Emissions for Light Vehicles with Ignition Engines in Simple Transient Conditions
2006DB31/ 357-2006 Limits for exhaust pollutant from in-use light-duty spark ignition vehicles under short transientdriving cycle
1999DB31/ 234-1999 Pollutant emission limits and test methods for light-duty vehicles at double-idling speeds
DB31/ 234-1999 Pollutant emission limits and test methods for light-duty vehicles at double-idling speeds was changed to DB31/ 357-2006 Limits for exhaust pollutant from in-use light-duty spark ignition vehicles under short transientdriving cycle.