The primary purpose of a highway is to enable the efficient and safe movement of people and goods from one place to another.

Embankment is not a component of a highway cross-section. It refers to the raised portion of land on which the highway is constructed.

A horizontal curve is used to change the direction of the highway while maintaining a smooth and safe transition for vehicles.

Concrete pavement is often preferred for highways with heavy traffic due to its durability, strength, and resistance to wear and tear.

The primary purpose of a median is to separate opposing lanes of traffic and prevent head-on collisions.

Gradient refers to the slope of a highway along its longitudinal axis, indicating the rate of change in elevation.

Diamond interchange is not a type of highway intersection. It is a specific design for grade-separated intersections.

Traffic signals are used to control the flow of traffic at intersections, ensuring the safe and orderly movement of vehicles.

Lane width refers to the width of a single traffic lane, typically measured in meters or feet.

Cost of construction is not typically a direct factor considered in the design of a highway. It is a secondary consideration that may influence the selection of materials and construction methods.

Guardrails are installed along highways to prevent vehicles from leaving the roadway in the event of an accident or loss of control.

Speed limit sign is not a type of highway pavement marking. It is a traffic sign used to indicate the maximum speed limit for vehicles on a particular section of the highway.

Exit spacing refers to the distance between two consecutive exits on a highway, typically measured in miles or kilometers.

Traffic signal lighting is not a type of highway lighting. It is specifically used to control the flow of traffic at intersections.

Weigh stations are used to weigh vehicles and ensure that they comply with the legal weight limits. This helps prevent damage to highways and bridges.