In 2026, bus Wi-Fi works by using a ruggedized industrial router installed on the vehicle that pulls a signal from 5G and 4G LTE cellular towers along the route. Essentially, the bus acts as a giant mobile hotspot. The router often uses "SIM aggregation," meaning it combines signals from multiple cellular carriers (e.g., Rogers, Bell, and Telus in Canada) to ensure a stable connection even when one carrier's signal drops. This signal is then broadcast throughout the cabin via internal Access Points (APs). In 2026, many high-end coaches have also begun integrating Starlink Maritime/Mobile satellite terminals on their roofs, which allows for high-speed internet even in remote rural areas or mountain passes where cell towers don't exist. To prevent one passenger from slowing down the "shared" connection, these systems use "bandwidth throttling" to limit high-definition video streaming while prioritizing lighter tasks like email, messaging, and social media browsing.