subsidies from the city government. , there are only three stations that have park and ride facilities (Angle Lake, Northgate, and Tukwila International Boulevard); for other stations, Sound Transit and local governments encourage alternative means of transportation to and from stations, including bus riding, walking, or bicycling. Notes Service 1Line trains run 20 hours per day from Monday to Saturday, from 5:00 am to 1:00 am, and 18 hours on Sundays and federal holidays, from 6:00 am to midnight. Trains operate most frequently during weekday peak periods, running every eight minutes from 6:00 am to 9:30 am and from 3:00 pm to 6:30 pm. Trains run every 10 minutes during midday and evening hours on weekdays and all day on weekends. Train frequency is reduced to every 15 minutes during the early morning and late night hours of all days. End-to-end travel from Northgate to Angle Lake stations takes 57 minutes, while trips between SeaTac/Airport station and Downtown Seattle take 38 minutes. The SeaTac–Westlake corridor was formerly served by King County Metro bus route 194, which took 32 minutes to travel between the two areas, and used bus stops that were closer to the terminal. The bus route ran at less frequent intervals, was subject to traffic delays, and had shorter hours of operation. Ridership 1Line trains carried over 25 million total passengers in 2019, averaging 79,674 riders on weekdays. Ridership is measured by on-board infrared passenger counters that automatically record the number of people entering and leaving the train. Approximately 32 percent of Series 1 vehicles have automatic passenger counters, while all Series 2 vehicles include them. Ridership on the 1Line has risen significantly from the beginning of service in 2009, when it averaged 15,500 per weekday. In 2010, ridership fell below projected levels due to the ongoing economic downturn, with only 21,611 daily riders on the line. Ridership increased significantly in the following years, surpassing 25,000 daily riders in 2012, 30,000 in 2014, and 35,000 in 2015. The opening of the University Link extension in March 2016 increased daily ridership by 66 percent in its first month of operation, and averaged 66,203 daily riders during the last quarter of the year. A single-day ridership record of 82,361 estimated boardings was set on April 8, 2016, credited to a Seattle Mariners home opener and the Emerald City Comic Con. The record was surpassed five months later on September 30,