Definition: Identifies the overall traffic flow at the property. Generally, traffic volume may be advantageous or disadvantageous to a property, depending on other conditions that affect its highest and best use. High-volume local traffic in commercial areas is usually an asset; heavy through traffic is deleterious to most retail stores, except those that serve travelers; high volume commercial traffic may have a negative impact on residential properties. The volume of traffic is typically determined by a traffic count, which is usually obtained from local or state transportation departments.