A test vehicle (100) comprises a substrate (99), a plurality of nested serpentine lines (202) on the substrate, and a plurality of test pads (204) on the substrate. Each serpentine line has a plurality of turn sections that comprise two parallel line segments connected by a perpendicular line segment. Each of the plurality of test pads is connected to a respective turn section of a respective one of the nested serpentine lines. Each pair of test pads connected to one of the subset of the nested serpentine lines has at least a respectively different turn section portion connected therebetween.