Navistar withdraws SCR lawsuit

Christopher Goodfellow - 28 April 2010

Navistar has dropped its lawsuit against the Californian Air Resources Board (CARB), which claimed the regulator was improperly certifying SCR-equipped vehicles, after the two parties reached an agreement that the federal documentation in question was not CARB policy.

The original suit stated that the guidance allowed vehicles with SCR systems to operate for "multiple and lengthy periods of time with the NOx emission control SCR Systems turned off, causing uncontrolled NOx to be discharged into the air". CARB has also agreed to run a work shop to look at the issues no later than August this year.

Jack Allen, president of Navistar's North American Truck Group, said: "We are pleased that CARB is taking this action and we look forward to participating in the workshop. We expect that our agreement with CARB will result in equal enforcement of the 2010 NOx requirements for all engine makers."

Navistar's ongoing litigation against Environmental Protection Agency over its certification of SCR-equipped trucks continues, with the case due to be heard before the appeals court on the 10 May.