Yes, the Washington D.C. Metrorail system costs money, and it utilizes a distance-based and time-of-day pricing model. Fares typically range from $2.00 to $6.00 per one-way trip, depending on how far you travel and whether you are riding during "Peak" hours (opening until 9:30 AM and 3:00 PM to 7:00 PM on weekdays). On weekends and late nights, there is often a flat fare of $2.00. Passengers must use a SmarTrip card, which can be purchased as a physical plastic card for $2.00 or added to a smartphone’s digital wallet via Apple Pay or Google Pay for free. There are no paper tickets. For frequent travelers, WMATA offers various "Unlimited Passes," such as a 1-day pass for $13.00 or a 7-day pass for $58.00, which can be cost-effective for tourists planning multiple trips in a single day. Failure to pay the fare can result in a citation or fine, as "fare evasion" is monitored by Metro Transit Police at the station barriers.