Which of the following is NOT a function of trip distribution?

Trip distribution is a key component of transportation planning that involves determining how trips are spread from various origins to multiple destinations. This process includes several specific functions, such as:

• Pairing trip origins with destinations, which involves analyzing where trips start and where they end, helping planners understand travel demands between different areas.

• Predicting trip numbers for each zone, which allows planners to estimate the volume of traffic that will travel to and from different areas, aiding in resource allocation and infrastructure development.

• Mapping travel patterns to various destinations, which involves visual representation of spatial relationships and travel preferences, helping planners optimize transportation services and layouts.

However, identifying traffic signal control falls outside the purview of trip distribution. Traffic signal control is a separate process that involves managing traffic flow at intersections to improve safety and reduce delays, which is more related to traffic operations rather than distribution of trips between origins and destinations. Therefore, the correct answer emphasizes that traffic signal control is not a function of trip distribution.