Programs that help people who are blind or who have visual impairments develop the fundamental spatial concepts and skills that are necessary for maximum mobility and independent living. Instruction focuses on moving safely and purposefully in the school, home or community environment; and usually includes procedures for street crossings, travel in unfamiliar areas, utilization of public transportation, and appropriate use of aids such as sighted guides or canes. Training for persons who want to acquire the skills to be a sighted guide may also be provided.