Transportation Engineering.

Transportation engineering is an area of specialty within the field of civil engineering. Transportation engineers are concerned with the design and building of large-scale systems that move people from one place to another. These systems include roads, railway and subway networks, and airports. The greatest demand for transportation engineers comes from cities, where the concentration of people living together is highest and where traffic is most likely to occur. The field of transportation engineering is growing due to a rise in urban populations during the twenty-first century. Increased awareness of fuel costs and environmental-impact issues are also driving the growth of transportation systems in cities.