Is it true that a city bus must yield to cars already in the driving lane when pulling away from the curb?

The correct answer is that a city bus does not have to yield to cars already in the driving lane when pulling away from the curb. In traffic laws, buses are often given certain privileges due to their size and the nature of their service. When a bus is pulling away from a curb, it is considered to be re-entering the traffic flow.

This action is treated differently than that of smaller vehicles, which must yield to traffic when merging. The rationale behind this rule is to facilitate public transportation efficiency and ensure that buses can serve their routes without undue delay.

While other factors, such as safety and courtesy, always play a role in driving behavior, the highway code specifies that buses have the right of way in these circumstances. This ensures that they do not impede the flow of public transit services, which are essential for many commuters.

Contextually, the other options imply conditions that would affect the yield requirement, which do not align with the established rules regarding bus operations. For example, a bus is not required to yield based on the presence of a turn signal or the time of day, viewing these circumstances primarily as standard operational protocols that do not override the base rule favoring buses re-entering traffic from stops.