Question 1: Some far-reaching systems, such as the Madrid Metro, the Moscow Metro, the Tokyo Subway, and the ________, have a loop line around the city center connecting the outward lines [21].
Question 2: [45] It may be possible to profit by attracting more passengers by spending relatively small amounts on grand architecture, art, cleanliness, ________, lighting and a feeling of safety.
Question 5: A rapid transit, metro, subway, underground, or elevated railway system is an electricpassengerrailway in an ________ with high capacity and frequency, and which is grade separated from other traffic.
Question 7: [17] Alternatively there might be a single central terminal (often shared with the central railway station), or multiple interchange stations between lines in the city center, as for instance in the ________.
Question 8: [15] However, some systems retain large ________ portfolios that help yield revenue[15]—some are even financed by the sale of land whose value has been increased by the building of the system.