The primary function of a transportation system is to enable the efficient and safe movement of people and goods from one place to another.

Traffic signals are typically associated with urban intersections and are not considered a component of a highway system.

Traffic surveys are conducted to gather information on traffic volume, patterns, and characteristics, which is essential for planning and designing transportation facilities.

Level of service (LOS) is a qualitative measure of the operational conditions of a highway, ranging from A (free-flowing traffic) to F (congested traffic).

Yield signs are not considered a type of intersection control as they do not require vehicles to come to a complete stop.

Public transportation systems aim to achieve multiple objectives, including reducing traffic congestion, providing mobility for those without access to private vehicles, and promoting sustainable transportation.

Monorail is not typically considered a type of public transportation system as it is less common and has limited applications.

Intermodal transportation refers to the seamless transfer of passengers and goods between different modes of transportation.

Expanding road capacity is not an effective long-term solution to traffic congestion as it often leads to induced demand, where more roads result in more traffic.

Transportation engineering is the specialized field of engineering that deals with the planning, design, construction, and maintenance of transportation infrastructure.

Traffic signals are not typically considered a type of traffic calming measure as they are primarily used to control traffic flow rather than reduce vehicle speeds.

Traffic management involves the implementation of strategies and technologies to improve the efficiency and safety of traffic flow.

Construction signs are not typically considered a type of traffic sign as they are used to inform drivers about temporary road conditions or construction activities.

Environmental impact assessment involves the evaluation of the potential environmental impacts of transportation projects and the development of measures to mitigate these impacts.

Traffic simulation models are not typically considered a type of transportation planning model as they are used to analyze traffic flow patterns rather than predict travel demand.