A lithographic projection system has an illumination system with a polarization member. The assembly allows tires of different widths and diameters to be used on the rear of motorcycles that have single side swing arms and standard swing arms. The vest is removably couplable to a seat belt of the vehicle by a tether strap that has at least one loop through which the seat belt of the vehicle is passed through. Lastly, a primary alternative route is selected from the plurality of alternative routes based on the quality of service level.