San Francisco Should Always Have a Subway Under Construction
Scott Wiener
56642

All new subway lines should have 4 tracks per line like most of New York’s subway system. Extra tracks allow trains to run 24 hours. In this system, two tracks shut down at late night hours (e.g. midnight-6am) while the other two tracks remain operational. During the day, it shortens transit times by skipping several stations at full speed.