Sun Tran provides affordable and quality public transportation in and around Tucson. Take Sun Shuttle Route 421 to the Ronstadt Transit Center in Downtown Tucson or the Laos Transit Center in south Tucson to transfer to most Sun Tran routes. To plan a trip on Sun Shuttle and/or Sun Tran, call (520) 792-9222 or visit www.suntran.com. Sun Tran and Sun Shuttle help you get out and see the sights. Enjoy and explore Tucson on Sun Tran.