 But as it turns out, a speed limit for the Greenbelt was never actually considered, according to representatives with Ada County. The Idaho Press reports the Ada County Board of Commissioners will instead move forward with a speed control provision advising Greenbelt users to exercise sound judgment and be aware of their surroundings when traveling the Greenbelt. Last week, an Ada County spokesperson said the original email and flyer that were sent out stating the proposed speed limit ordinance was made an error by the county's communications office.