The volume-delay diagram is not a fundamental diagram of traffic flow because it does not represent the relationship between speed, flow, and density.

Transportation planning models are used to predict future travel demand, evaluate the impacts of transportation projects, and develop transportation policies and plans.

Rumble strips are the most common type of highway safety improvement because they are relatively inexpensive and effective at reducing crashes.

The goal of traffic signal optimization is to reduce traffic congestion, improve traffic flow, and reduce air pollution.

The number of lanes is the most important factor in determining the capacity of a highway because it determines how many vehicles can travel on the highway at the same time.

The purpose of a traffic impact analysis is to predict the traffic impacts of a proposed development, evaluate the need for transportation improvements, and develop a transportation management plan.

The most effective way to reduce traffic congestion is to build more roads, increase the capacity of existing roads, and encourage people to use public transportation.

The most common type of public transportation is the bus because it is relatively inexpensive and can be used to serve a wide variety of areas.

The purpose of a TDM program is to reduce traffic congestion, improve air quality, and promote public transportation.

The success of a TDM program depends on strong leadership, public support, and adequate funding.

Autonomous vehicles, connected vehicles, and intelligent transportation systems are all promising new technologies for reducing traffic congestion.

Climate change, population growth, and economic development are all major challenges facing transportation engineers today.

Transportation engineers can address the challenges facing them by developing new technologies, improving existing infrastructure, and educating the public.

The future of transportation engineering is more sustainable, efficient, and equitable transportation systems.

Transportation engineering is an exciting field that offers the opportunity to make a difference in people's lives, solve complex problems, and work with new technologies.