About 40 commuters, retirees, and disgruntled citizens who could be affected by the proposed widening of Highway 281 from Evans Road to F.M. 306, bombarded members of the Metropolitan Planning Organization with threats and colorful language last Monday. Yet their tactics didn't affect the MPO's vote to move forward with preliminary studies of toll lanes on existing highways on the far North Side. State plans include the possibility of installing toll lanes along Loop 1604 from Highway 151 eastward to I-10 East and along Highway 281 from Evans Road north to the Canyon Lake area. If a "comprehensive development agreement"...