Gas prices may keep Idahoans from heading out Memorial Day weekend.  Triple-A of Idaho says consumer apprehension and significantly higher fuel prices may limit travel growth.  Triple-A expects 34.8 million Americans will go 50 miles or more during the holiday.  They expect that to be a modest increase by only 1.2 percent.  That’s about 500,000 travelers.  That’s only a slight improvement from last year’s travel numbers.  Idaho’s average price for a gallon of gas is $3.80, up $.03 from April 1st.