Route number is 4B. Remember it—the number stays the same everywhere: on the stop display, in apps, on the vehicle itself. Look for 4B specifically. If you're not sure you found the right stop, just ask someone nearby: 'Does bus 4B stop here?'

This route serves the Buenos Aires (Argentina) region. In larger metro areas, routes can pass through several districts or towns. To know for sure if it works for you, pull up the route map and check the key stops and direction.

Operator is Juan B. Justo S.A.T.C.I.. This is the official company responsible for the route. If you run into problems (rude driver, breakdown, dirty vehicle, delays)—contact them. It helps to note the time, direction, and route number—makes your complaint more specific and gets handled faster. Contact info is usually on the company website or in transit apps.

This route is part of the 'CABA' transit system. Within one network, payment and transfer rules are often consistent. Terms can differ though, so check current fares and payment methods in up-to-date sources before your trip.

On transit maps this route is marked in blue. Color helps you spot the line quickly and tell it apart from others. In some cities the line color appears on stop signs or even on the vehicles themselves. The exact shade might vary between sources—go by route number and endpoints instead.

Yes. Payment rules and discounts can differ by region and vehicle type. If it matters to you, verify current fares and ticket/validation requirements before traveling.

Payment methods: cards. In practice, options can vary depending on how new the vehicle is and what equipment it has. Have a backup payment method just in case, and check the validator or ask the driver when boarding.

Yes, contactless payment is supported. Tap your card or phone on the validator and wait for confirmation. Sometimes terminals can be temporarily down, so it's good to have a backup payment method in case of a glitch.

Yes. Accessibility usually means low-floor entry with ramps and designated spaces. Even when accessibility is stated, conditions can vary on specific vehicles and stops. If this is critical, check the vehicle type for your specific trip and confirm ramp/entry availability beforehand.