The three-year Bus on Shoulder (BOS) pilot project allows for South Bay Rapid buses, to use select shoulders along I-805 and SR 94 between National City and Downtown San Diego, during peak travel times to ensure reliability and maintain transit schedules. This project is the San Diego region’s first use of transit vehicle-to-infrastructure technology.
SAFETY IS OUR FIRST PRIORITY On-Bus + Infrastructure Technology Sensors embedded on these buses monitor the lanes and provide audio and visual alerts to the bus drivers, to help avoid potential conflicts between the buses, other vehicles, or obstructions along the corridor and shoulder. https://busonshoulder.sandag.org
Only specially trained MTS drivers on South Bay Rapid buses equipped with driver assistance technology are permitted to operate in the freeway shoulder. Bus drivers will only use shoulders when travel lanes are operating under 35 mph and will never exceed 35 mph in the shoulder. Freeway drivers should remain alert and never follow behind the bus into the shoulder. The shoulders will always be available for law enforcement and emergencies.
Start Date Summer 2022 Operations Weekdays Only 5-9 AM (northbound I-805/westbound SR 94) 3-7 PM (eastbound SR 94/southbound I-805 connector)
FUNDING Federal Transit Administration and TransNet, the regional half-cent sales tax for transportation projects administered by SANDAG.
ALIGNMENT WITH STATE AND REGIONAL PRIORITIES The project aligns closely with the California Transportation Plan 2050, the Climate Action Plan for Transportation Infrastructure (CAPTI), and SANDAG’s 2021 Regional Plan, which will modernize the San Diego region’s transportation system, so it is accessible for everyone, safer, and more sustainable. SANDAG’s plan will create transportation options that are as fast or faster than driving alone and make transit competitive in every major corridor in the region.
