Traffic Engineering Practice Test: Traffic Capacity — Flashcards

Traffic Capacity topics include: Highway capacity basics, two lane and multilane highway capacity, basic freeway capacity, weaving sections and rotary capacity.

Traffic capacity is the maximum number of vehicles that can pass a given point on a road or lane within a unit of time. This unit of time is usually one hour. 
Traffic capacity is associated with traffic volume and traffic density. Traffic volume is usually expressed as cars per hour. Traffic density is expressed as vehicles per kilometer. 
Traffic capacity is dependent on several factors, including: Vehicle width, Vehicle speed, Uniformity of speeds, Curvature, Local surroundings. 
Adding capacity to a highway can decrease travel time, which can lower the "price" of driving. 
 

Related:

Traffic Engineering Practice Test: Fundamental Principle of Traffic Flow

Traffic Engineering Practice Test: Speed Studies