Transportation — Ben Loves Puerto Rico

Outside of Old San Juan, you need a car.

Fact-check desk, Sept 2026 Two rental realities worth knowing up front: most highway tolls are cashless AutoExpreso now — take the rental company's transponder or note: plate-billed fines have been under a moratorium since 2022 and are slated to resume October 2026 at $15 each — the transponder is still the smart move — and you cannot take a rental car on the ferry to Vieques or Culebra; you park it and rent again on-island.

GPS always helps. Not all carriers work well on the island, so call yours before you go. Download Waze -- it works best there.

In Old San Juan-- use your feet!

Old San Juan is a very “walkable” town. You may need a whole day to walk around and see the 2 forts. For uphill areas, you can use the free trolley.

Fact-check desk, Sept 2026 The free Old San Juan trolley has been out of service for years with no restart date — plan on walking (comfortable shoes, it's hilly) or short Ubers.

A few Differences

Some of the notable differences are that the drivers in Puerto Rico (usually) don’t follow red lights or stop at stop lights--for fear of being hijacked.

Fact-check desk, Sept 2026 A dated observation worth softening: treating red lights as stop signs late at night was a real practice; carjackings have declined from their 2019 peak and daytime traffic behaves like any U.S. state. Drive defensively and you're fine.

Taxi Vs. Uber

In Puerto Rico and anywhere else, it’s safe to use Uber. They are cheap and safe, because you know the drivers’ info, and can be tracked by GPS. Cost-wise, using Uber is way cheaper than getting taxis.

Públicos: The System This Page Left Out

Puerto Rico still runs a real public transportation network the guide never mentions: públicos, shared vans (8 to 15 seats, yellow public-service plates) that run fixed inter-town routes and are the island's only true intercity transit. They still operate in 2026. There's no app and no printed schedule — a público leaves when it's full, not at a set time. Find one at a terminal de carros públicos (Río Piedras has San Juan's main hub, a short walk from the Tren Urbano's Río Piedras station), tell the driver your destination, and pay cash — most don't take cards. Fares run roughly $3–$5 per town-to-town leg.

Fact-check desk, Sept 2026 Honest verdict: públicos are real and cheap, but they're a Spanish-helps, flexible-schedule, patience-required system built for residents commuting between towns — not a tourist's reliable way to reach a specific beach or trailhead by a specific time. Workable for an adventurous, unhurried traveler moving along a known route (San Juan–Fajardo, for instance); not a substitute for a rental car if you're on a resort schedule.

Renting a Car

At SJU, the major agencies (Alamo, Enterprise, and others) hand off from the terminal to the Car Rental Center directly across from baggage claim — no shuttle needed; a handful of smaller off-airport agencies do run a shuttle. Insurance requirements vary by company: some require you to show proof your own auto policy extends to Puerto Rico, others sell CDW at the counter. Confirm which applies before you're standing at the desk — don't assume any card in your wallet has you covered.

Fact-check desk, Sept 2026 Tolls: PR-52 is fully cashless; PR-22 takes AutoExpreso plus limited cash lanes. Individual tolls run about $0.70–$1.70 each. Skip the transponder the rental counter offers and a missed toll currently bills nothing — fines have been under a moratorium since 2022 and resume October 2026 at $15 per crossing by plate lookup after the fact — take it.

Uber and Taxis

Uber picks up at SJU around the clock from marked curbside zones, and it's solid throughout the San Juan metro — San Juan proper, Condado, Isla Verde, Santurce, Carolina, and into Bayamón and Guaynabo. Outside that ring, coverage thins fast: expect sparse-to-nonexistent Uber in Rincón, Ponce, Aguadilla, the mountains, and the outer islands. Metered taxis still exist in San Juan as a fallback.

Fact-check desk, Sept 2026 "Uber works in Puerto Rico" is true and misleading in the same sentence — it means metro San Juan, not the island. Anyone basing a Rincón, Ponce, or mountain trip on catching an Uber needs a rental car or a pre-arranged taxi/tour transfer instead.

The Tren Urbano

San Juan's light rail is real, running, and free right now — fare collection has been suspended since March 2024 with no confirmed restart — but it was built for commuters, not visitors. It skips Old San Juan, Condado, and Isla Verde entirely. Its useful stretch for a tourist is Bayamón to Río Piedras to the Hato Rey business district, with a University of Puerto Rico stop and a connection to the botanical garden.

Fact-check desk, Sept 2026 Straight answer: for a first-time visitor's itinerary (forts, beaches, Condado), the Tren Urbano isn't useful — it doesn't reach any of it. It's genuinely useful only if you're headed to Río Piedras or Hato Rey specifically, or connecting onward to a público terminal.

Driving Quirks Worth Knowing

Gas is sold by the liter island-wide, not the gallon — a pump reading that looks cheap per unit isn't. Waze remains the strongest option for real-time hazards and rural roads Google Maps sometimes gets wrong, though Google Maps has closed the gap for general navigation and points of interest. Mountain roads (the Ruta Panorámica and similar routes) are narrow, switchbacked, and slower than the map suggests — budget real extra time, not just extra miles.

Sources: autoexpreso.com, tollguru.com, alamo.com and enterprise.com SJU pages, globalpetrolprices.com, en.wikipedia.org (Tren Urbano, Terminal de Transportación Pública Carlos Garay), vieques.com — fact-check desk live checks, Sept 2026.