On the bus
You can pay with cash on the bus. When you board, tell the operator whether you want a 2½-Hour Ticket or a Day Pass, for Adult, Honored Citizen or Youth. Insert coins or bills into the farebox (exact change only), then grab your ticket from the printer on your right. Fareboxes accept any combination of bills and coins (including $1 coins).
Your ticket is your proof of payment, valid for travel on buses and trains until the expiration time shown. Keep this ticket until you have completed your trip.
Please note: Bus operators cannot make change.
On MAX
You can buy a ticket using cash from the ticket machines at MAX stations. Buy your ticket before boarding, then tap the ticket on the green Hop reader to validate it before boarding. Your ticket is your proof of payment, good for either 2½ hours or 1 day on buses and trains.