Street helmets look like this. Dirt helmets look like this. You wear them with goggles. Yes, they do protect your face, but that pronounced chin may exaggerate torsional forces in a crash. They'll also be noisy and unstable at highway speeds. Choose the right helmet for the kind of riding you plan to do. To be legally worn on the road in Trumpistan, a motorcycle helmet must be marked with a DOT-approved sticker. You’ll see those affixed prominently on the …