artificial lighting. The building also contains a rainwater harvesting system which captures and stores the water for use by the bus wash and toilets. The landscape was also designed to be low maintenance and to not require an irrigation system. Additionally, the HVAC system was built below-floor providing both heat and air conditioning, which reduces the heat or cool air lost when traveling through typical air ducts. Gallery Fares Payment is available on board with exact change, purchased bus passes, a refillable smart card, or through COTA's Connector app. Passes can be purchased at COTA's downtown office, the Spring Street Terminal, John Glenn International Airport, the Columbus State Community College Bookstore, or at supermarkets throughout Central Ohio. In 2021, COTA is transitioning to a cash-free system, based on the Transit app. About 400 retail stores in Central Ohio are or will be available to add cash to customer accounts. The Transit app has fare capping, so users will not pay over $4.50 per day or $62 per calendar month. Discounted pricing Users of the C-Pass employee program can use a mobile app or dedicated swipe card to board free. Riders eligible to receive special IDs giving them discount fares include people over the age of 65, people with certain disabilities, Medicare cardholders, and qualified veterans. Children under the age of 12 who are 4 feet tall or taller are eligible for discount pricing. Children below ride for free with fare-paying rider; limit three children. Students of Ohio State University, Capital University, Columbus College of Art and Design, and Columbus City Schools can swipe their student ID cards to board for free. COTA's summer youth pass is another fare option for people under the age of 17, allowing access to COTA services for the months of June, July, and August for a single $62 fee. Bus service is free during or after severe snowstorms for the duration of the day, announced when the Franklin County Sheriff declares level 2 or level 3 snow emergencies. COTA bus service has also been made temporarily free during other emergencies, including at the beginning and height of the COVID-19 pandemic. Fleet A variety of buses make up COTA's fleet. there are 492 vehicles in operation: 212 hybrid or CNG buses, 109 diesel-fueled buses, 12 COTA Plus vehicles, 74 COTA Mainstream vehicles, and 85 COTA Mainstream On-Demand vehicles. In June 2010 COTA introduced six hybrid buses,