Beginning a number of years ago, the Washington State legislature decided to copy and follow California when it comes to ...

Starting January 1, Washington may halt sales of new motorhomes and large trucks powered by diesel or gasoline.

A recent change to clean truck regulations could kickstart the ban on big diesel motorhomes as soon as the beginning of the ...

Newly adopted clean air regulations could limit the sale of large motor homes or recreational vehicles (RV) in California.

California motorhome sales may grind to a halt if new emission rules concerning diesel vehicles go into effect, industry ...