jaskinie: Moscow Metro

Evidence: 100 • authority: 72

The Moscow Metro is a rapid transit system in the Moscow metropolitan area of Russia. It serves the capital city of Moscow and the neighbouring cities of Krasnogorsk, Reutov, Lyubertsy, and Kotelniki. Opened in 1935 with one 11-kilometre (6.8 mi) line and 13 stations, it was the first underground railway system in the Soviet Union. As of September 2026, the Moscow Metro has 309 stations and 541.9 km (336.7 mi) of route length, making it the 8th-longest in the world, the longest in Europe and the longest outside China. It is also the only system in the world with three circle lines. The system is mostly underground, with the deepest section 73 m (240 ft) underground at the Park Pobedy statio…

Evidence: 45 • authority: 72

The Madrid Metro (Spanish: Metro de Madrid) is a rapid transit system serving the metropolitan area of Madrid, the capital of Spain. First opened in 1919, the system has regularly undergone numerous extensions over the next century, bringing it to today's network which comprises thirteen lines (including one two-station shuttle line). The network is largely managed by Metro de Madrid S.A., which is owned by the Government of the Community of Madrid. As of September 2025, the lines have a combined length of 296.6 kilometres (184.3 mi), making Madrid's Metro system the 20th longest rapid transit system in the world, the 6th longest in the world outside of China, and the 3rd longest in Europe…

Evidence: 36 • authority: 80

Moscow Metro: the world’s first major transport system to operate fully contactless with NXP’s MIFARE technology

Evidence: 27 • authority: 72

The Shanghai Metro (Chinese: 上海地铁; pinyin: Shànghǎi Dìtiě; Shanghainese: Zaon6he5 Di6thiq7) is a rapid transit system in Shanghai, operating urban and suburban transit services to 14 of its 16 municipal districts and to the neighboring township of Huaqiao, in Kunshan, Jiangsu Province. Forming the vast majority of the broader, multi-operator Shanghai rail transit network, the Shanghai Metro system is the world's second longest metro system by route length, totaling 808 kilometres (502 mi) and the second largest system by number of stations, with 506 stations across 19 lines (408, if stations connected by transfers are counted as single stations). It also ranks first in the world by annual r…

Evidence: 27 • authority: 72

The Helsinki Metro (Finnish: Helsingin metro, Swedish: Helsingfors metro) is a rapid transit system serving the Helsinki capital region, Finland. It is the only metro system in Finland as well as the world's northernmost metro system. It was opened to the general public on 2 August 1982 after 27 years of planning. It is operated by Helsinki City Transport and Metropolitan Area Transport Ltd for Helsinki Regional Transport Authority and carries 92.6 million passengers per year. The Helsinki Metro is a system separate from the main railway network in Finland, forming the core of public transport in Helsinki along with the Helsinki commuter rail, the Helsinki light rail and trunk bus lines in…

Evidence: — • authority: 72

Passenger Wi-Fi on subway trains is a service provided primarily for wireless internet access for passengers on board subway trains. Wi-Fi for subway passengers is a standard service provided in the majority of large cities worldwide. Wi-Fi in stations is present in the systems of Hong Kong, London, New York, Moscow, St. Petersburg, Riyadh, Singapore, Tokyo, and Toronto. Delivering high-speed Wi-Fi on underground trains is more complex and requires two radio networks: one which delivers the signal to tunnels and trains (a Trackside Network or TSN), and a Wi-Fi network on board the trains to enable passenger connectivity. Wi-Fi connectivity currently operates on underground trains in Moscow…

Evidence: — • authority: 72

Rapid transit, mass rapid transit (MRT) or rail rapid transit (RRT) and commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separated rapid transit line below ground surface through a tunnel can be regionally called a subway, tube, metro or underground. They are sometimes grade-separated on elevated railways, in which case some are referred to as elevated, el or L trains – short for "elevated" – or skytrains. A common alternative term for rapid transit in North America is heavy rail. Rapid transit systems are usually electric railways that, unlike buses or trams, operate on an exclusive right-of-way, which cannot be acce…

Evidence: — • authority: 72

The Delhi Metro is a rapid transit system that serves Delhi and the adjoining satellite cities of Faridabad, Gurugram, Ghaziabad, Noida, Bahadurgarh, and Ballabhgarh in the National Capital Region of India. The system consists of 10 colour-coded lines serving 271 stations, with a total length of 374.466 km (232.682 mi). It is India's largest and busiest metro rail system. The metro has a mix of underground, at-grade, and elevated stations using broad-gauge and standard-gauge tracks. The metro makes over 4,300 trips daily. Construction began in 1998, and the first elevated section (Shahdara to Tis Hazari) on the Red Line opened on 25 December 2002. The first underground section (Vishwavidyal…

Evidence: — • authority: 72

The city of Moscow, Russia, hosts a large population of free-ranging dogs. Many operate in packs and have become accustomed to seeking food from passersby. Some of them who frequent or inhabit the subway have attracted international attention for learning how to use the trains to commute between various locations. The most famous Muscovite street dog is Laika (Russian: Лайка), who ended up being one of the first animals in space and the first to orbit the Earth.

Evidence: — • authority: 72

Moscow is the capital and largest city of Russia, situated on the Moskva River in Central Russia. The city has a population estimated at more than 13 million residents within city limits, more than 19.1 million residents in the urban area, and more than 21.5 million residents in the metropolitan area. The city covers an area of 2,511 square kilometers (970 sq mi); the urban area covers 5,891 square kilometers (2,275 sq mi); and the metropolitan area covers more than 26,000 square kilometers (10,000 sq mi). Moscow is among the world's largest cities: the most populous city entirely in Europe, the largest urban and metropolitan areas in Europe, and the largest city by land area on the Europea…

Evidence: — • authority: 88

CAUSES OF TRAIN BRAKING SYSTEM FAILURES OF MOSCOW METRO. Abstract The statistics and structure of failures of trains and braking systems of Moscow Metro are presented. The reasons for finding ways and means to increase the reliability of metro train braking systems are described. The study objective is to increase the durability of metro train braking systems. The task to which the paper is devoted is to find out the weaknesses of metro train braking systems. Research methods: theoretical methods for the study of metro train braking systems, analysis of failure causes, their features, varieties, and analysis of operational principle and design of braking systems. The novelty of the work: fi…