A bill to amend title 23, United States Code, with respect to the operation of longer combination vehicles on the Interstate System in Idaho, and for other purposes.

Idaho Safe and Efficient Vehicle Act of 2013 - Prohibits application of federal weight limitations to a longer combination vehicle operating on a segment of the Interstate System in Idaho if it: (1) has a gross vehicle weight of 129,000 pounds or less; (2) complies with certain single axle, tandem axle, and bridge formula weight limits; and (3) is authorized to operate on that segment under Idaho law.