What does the standee line on a bus indicate?
Correct answer: B – The boundary ahead of which riders may not stand
Federal rules require a bus designed for standing passengers to identify the prohibited area forward of a plane through the rear of the driver's seat. Mississippi's CDL manual calls this boundary the standee line. All standing riders must remain behind it so they do not occupy the designated space near the driver.
Source: Mississippi Commercial Driver’s License Manual — § 4.2.3, “Standee Line”, 49 CFR § 393.90 – Buses, standee line or bar

