The driver of a public bus approaching or at B lights showing a yellow B light must stop (a) if there is a stop line at or near the B lights and the driver can stop safely before reaching the stop line as near as practicable to, but before reaching, the stop line; or(b) if there is no stop line at or near the B lights and the driver can stop safely before reaching the B lights as near as practicable to, but before reaching, the nearest or only B lights.Penalty: Fine not exceeding 10 penalty units.Note 1 Yellow B light and stop line are defined in the dictionary. Note 2 Rule 283 explains when the driver of a public bus does not have to stop for a red B light.