Abstract
Research was conducted at four study sites over a period of five months and was divided into three phases (light, medium, and heavy bicycle flow rates.) The findings of the study indicate that bicycles and bicycle lanes result in a small decrease of speed of traffic and a slight shift away from the curb of the transverse placement of vehicles. Bicycle lanes when placed on streets without parking and of adequate width appear to have little detrimental effect on traffic flow and may serve the beneficial purpose of providing better separation between vehicles and bicycles. The report includes suggested street characteristics desirable for bicycle lanes and suggested widths of such bicycle lanes on various width streets.