Hi, we are a family that travels by motorcycle a lot. Just give us the same distance as you would a car. Just because we are smaller and don't take up as much room, people sometimes feel the need to drive in our space. My husband has been riding for 50+ years. Our son and daughter learned to ride at an early age, they are now 49@50. We all ride with helmets and I do feel that they should be used at all times, but that is just my belief. We live in Canada and here it is the law but when we ride south of the boarder we still wear them. Donna