Editing Commuter rail (section)

====Metro====
Metro rail and [[rapid transit]] usually cover smaller inner-urban areas within {{convert|12|to|20|km|abbr=on|0}} of city centers, with shorter stop spacing, use rolling stocks with larger standing spaces, lower top speed and higher acceleration, designed for short-distance travel. They also run more frequently, to a headway rather than a published timetable and use dedicated tracks (underground or elevated), whereas commuter rail often shares tracks, technology and the legal framework within mainline railway systems, and uses rolling stocks with more seating and higher speed for comfort on longer city-suburban journeys. 

However, the classification as a metro or rapid rail can be difficult as both may typically cover a metropolitan area exclusively, run on separate tracks in the centre, and often feature purpose-built rolling stock. The fact that the terminology is not standardised across countries (even across English-speaking countries) further complicates matters. This distinction is most easily made when there are two (or more) systems such as New York's [[New York City Subway|subway]] and the [[Long Island Rail Road|LIRR]] and [[Metro-North Railroad]], Paris' [[Paris Métro|Métro]] and [[Réseau Express Régional|RER]] along with [[Transilien]], Washington D.C.'s [[Washington Metro|Metro]] along with its [[MARC Train|MARC]] and [[Virginia Railway Express|VRE]], London's tube lines of the [[London Underground|Underground]] and the [[London Overground|Overground]], [[Elizabeth line]], [[Thameslink]] along with other commuter rail [[Transport in London#Heavy rail|operators]], Madrid's [[Madrid Metro|Metro]] and [[Cercanías Madrid|Cercanías]], Barcelona's [[Barcelona Metro|Metro]] and [[Rodalies de Catalunya|Rodalies]], and Tokyo's [[Tokyo subway|subway]] and the [[East Japan Railway Company#Greater Tokyo Area|JR lines]] along with various privately owned and operated commuter rail systems.