This is especially the case if travel to destinations includes transfers and significant waiting times. Public transport also provides basic mobility to those who may not have access to cars and whose travel requirements are not suited to walking or cycling. High-frequency, rapid and good quality public transport supply may compete with cars in terms of convenience, cost and overall user experience. It does so while decreasing per-passenger land-take, energy use and environmental impacts due to efficiencies derived from scale and electrification in the case of many rail, trolley and electric-powered bus systems.