It would be nice if the actual RIPTA Park & Rides were served by more than the twice-a-day express routes, but there are some DIY lots that work well.

Twin River is good because there is an ocean of parking and the security is good. The 54 runs every 30 minutes and is express to downtown from there. The 51 runs the same route, except as a local down Charles St. 73 also stops there which goes to Pawtucket.

The parking lot behind the Cranston police station at the start of the Washington Secondary Trail is another good one. The 30 & 31 both stop there and there's a bus every 15 minutes. Parking is allowed for the bike trail there and it's in full view of the security cameras in the police lot, so it's a fairly safe place to park.