Level of service (LOS) is a qualitative measure that describes the operational conditions of a traffic stream, ranging from free flow to congested conditions.

The main advantage of flexible pavement is its lower initial cost compared to rigid pavement, making it more economical for many applications.

The primary function of a roundabout is to reduce traffic delays by allowing continuous flow of vehicles while minimizing conflict points.

A traffic impact study evaluates how a new development will affect existing traffic patterns and infrastructure.

Traffic calming measures are designed to improve safety and reduce vehicle speeds in residential and high pedestrian areas.

While weather patterns can influence transportation, they are not typically a primary factor considered in transportation planning compared to population growth, economic development, and land use patterns.

Superelevation is the banking of a roadway at a curve, which helps vehicles navigate safely by counteracting lateral acceleration.

The crosswalk sign indicates a pedestrian crossing, alerting drivers to be cautious and yield to pedestrians.