Possible Clues:

• Metro
• Turnstile locale
• Underground passage
• Responsible for underground movement going back on the road to Washington on Fourth of July
• New York railway
• Is responsible for underground movement going back by public transport to Washington on Fourth of July
• Tunnel underground
• Reserve means of travel underground
• Public transport on the rise — method is for one to go Underground
• Passage taken from unionist book disturbs authority