Bike lanes refer to designated areas on roads or highways specifically built for bicycles. These bike lanes are usually separated from vehicle traffic by a physical barrier such as a curb, parked cars, or other visual cues like painted lines. The purpose of these bike lanes is to provide a safer and more convenient way for cyclists to travel on roads shared with motor vehicles. Bike lanes can also help reduce conflicts between bicycles and automobiles, promote alternative modes of transportation, and encourage healthier lifestyles through cycling.