Fuel stations are places where vehicles such as automobiles can fill their gasoline, diesel and similar fuels. Gas stations are usually located along roadsides or outside cities and include a stop where people can fill up their vehicles. Gas stations may also include a service section where people can clean their vehicles, change tires, and so on. Gas stations may also sell oils, lubricants and similar products that can be used to improve the performance of people's vehicles. Gas stations take various safety measures to ensure a safe environment when people fill their vehicles, and these measures include fire extinguishers, first aid supplies, and similar equipment.