Transportation on campus is pretty easy. The New Paltz Loop is a free shuttle for students, faculty, and staff that makes dozens of trips around campus and town each day (until 10 p.m.). Just show your student ID and you can ride!
If you'd like to travel outside of the New Paltz area, the Ulster County Area Transit (UCAT) is probably your best bet. It's $1 to board and 25 cents for each additional zone. There are also several inexpensive taxi services around New Paltz. Most drivers will charge less than $5 for a local trip. Students traveling down to NYC or Long Island hit up the New York Trailways bus station, which is located right off campus. Students get discounted bus fares.