Which road types are affected by the MUTCD manual?

The Manual on Uniform Traffic Control Devices (MUTCD) provides the standards for traffic control devices on all public roads that are open to public travel. This includes road types such as public roads, toll roads, and even private roads that have been opened to public traffic.

The correct answer indicates these types of roads because the MUTCD is applicable to any roadway that is available for public use, including those that charge tolls. Other choices may include road types that do not fall under the jurisdiction or requirements stipulated by the MUTCD, such as fully private roads that are not intended for public travel or local and municipal roads that self-govern without adherence to the standards set by this manual. This distinction is vital for ensuring that safety and uniformity in traffic control devices are maintained across all relevant road types that the public may utilize.