Related Clues:

• Bus passenger
• Piece of pork?
• Amendment
• Subway patron
• Bill add-on
• One of 13-Down
• One on horseback
• Cyclist or equestrian
• Fare payer
• Band's demand list
• Agreement addendum
• Paul Revere, for example
• Rodeo contestant
• 25 Down passenger
• War classic "Low ___"