BOISE, Idaho -

An organization representing snowmobile manufacturers is asking a federal judge to let it bring an appeal over rules governing the use of snowmobiles in national forests.
    
The International Snowmobile Manufacturers Association filed the motion to intervene in Boise's U.S. District Court on Thursday in a lawsuit brought by the Idaho-based Winter Wildlands Alliance against the U.S. Forest Service.
    
The Winter Wildlands Alliance won the lawsuit earlier this year when U.S. District Judge Ronald Bush agreed with the group's contention that the Forest Service was wrongly excluding snowmobiles from a requirement that forests must create travel management rules for motorized vehicles in national forests. Now the snowmobile group hopes to appeal that finding to the 9th U.S. Circuit Court of Appeals, but first it must get permission to join the lawsuit.