20:28, 22 uztaila 2013ko berrikusketa aldatu Laukatu (eztabaida \| ekarpenak) 10.749 edits →‎Irisgarritasuna ← Aurreko ezberdintasuna		23:22, 22 uztaila 2013ko berrikusketa aldatu desegin Laukatu (eztabaida \| ekarpenak) 10.749 edits →‎Segurtasuna Hurrengo ezberdintasuna →
18. lerroa: Bestalde, nasa eta trenaren arteko tartea ere aipatu beharra dago. == Segurtasuna == === Abiadura Handiko Trenbideak === [[Irudi:Andén 3 Estación de Burgos.JPG\|thumb\|250px\|''Burgos Rosa de Lima'' geltokian trena gelditu gabe jarraitzeko nasa gabeko trenbidea dago]] [[Abiadura handiko tren\|Abiadura handiko trenbideeetatik]] gelditu gabe pasatzen diren trenek segurtasun arazoak sor ditzakete, pasatzen den trenaren abiadura zenbat eta handiagoa izanik, nasaren izkinatiko segurtasun distantzia handitu behar delako. Hainbat herrialdetan, segurtasun neurri modura, gelditzen ez diren trenek nasa batetik 200 km/h abiaduratik behera pasatzera derrigortuta daude. Arazoari aurre egiteko beste modu bat geltoki ondoan nasarik gabeko trenbidea eraikitzea da, trenak aurrera jarrai dezan geltokitik pasa gabe. === Metro automatikoak === In high-speed rail passing trains are a significant safety problem, as the safe distance from the platform edge increases with the speed of the passing train. Several countries have laws that prohibit trains passing platforms above certain speeds (usually 200 km/h). For stations on high-speed lines this leaves two alternatives unless all trains stop there: either a speed limit for passing trains, or the station has to be rebuilt to include tracks that do not pass platforms. Hainbat metro lineatan nasako ateak daude, nasa eta trenbidearen artean. Oro har metro automatiko lineatan ematen da aipatutako sistema, [[Mamarigako anezka]] linean kasurako. Trena geltokira heldu eta bere ateak nasako ateen parean kokatu ondoren, trena gelditu eta ateak automatikoki zabaltzen dira. Hala, trenbidera erortzeko arriskua alde batera uzten da, eta bestalde, geltokian eta trenbideko tunelean airea independienteki girotzea ahalbidetzen da. Many platforms have an area underneath the edge so people who fall off the platform can seek shelter from incoming trains~~. A dangerous practice is sitting on the edge of the platform, which requires withdrawing the legs fast enough when a train arrives~~.▼ Some metro stations have platform screen doors between the platforms and the tracks. They provide more safety, and they allow the heating or air conditioning on the station and the ventilation in the tunnel to be separated, thus being more efficient and effective. They have been installed in most stations of the Singapore MRT and the Hong Kong MTR, as shown in the photos below, and stations on the Jubilee Line Extension in London. Platforms should be sloped upwards slightly towards the platform edge to prevent wheeled objects such as trolleys, prams and wheelchairs from rolling away and into the path of the train.[citation needed] ▲Many platforms have an area underneath the edge so people who fall off the platform can seek shelter from incoming trains. A dangerous practice is sitting on the edge of the platform, which requires withdrawing the legs fast enough when a train arrives. Markings 32 ⟶ 33 lerroa: Curvature ~~A common sign at curved platforms on the London Underground.~~ Ideally platforms should be straight or slightly convex, so that the guard can see the whole train when preparing to close the doors. Platforms that have great curvature have blind spots that create a safety hazard. Mirrors or closed-circuit cameras may be used in these cases to view the whole platform. Also passenger carriages are straight, so doors will not always open directly onto a curved platform – often a gap is present. (Usually such platforms will have warning signs, possibly auditory, such as London Underground's famous phrase "Mind the gap"). There may be moveable gap filler sections within the platform, extending once the train has stopped and retracting after the doors have closed. The New York City Subway employs these at 14th Street – Union Square on the IRT Lexington Avenue Line and at Times Square on the 42nd Street Shuttle, and formerly at the South Ferry outer loop station on the IRT Broadway – Seventh Avenue Line.

Nasa (trenbidea): berrikuspenen arteko aldeak