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Transportation engineering


Transport engineering aims to ensure the safe and efficient movement of people and goods.

The planning aspects of transportation engineering relate to urbanplanning , and involve technical forecasting decisions and more difficult political factors. Technical forecasting or urbanpassenger travel presently involves what is called the four-step urban transportation planning model, requiringthe estimation of trip generation (how many trips for what purpose), trip distribution (destination choice, where are you going),mode choice (what mode is being taken), and route choice (which streets, transit routes are being used).

The design aspects of transportation engineering include the sizing of transportation facilities (how many lanes or how muchcapacity the facility has), determining the materials and thickness used in pavement , designing the geometry (vertical and horizontal alignment) of the roadway (or track).

Operations and management involve traffic engineering , sothat vehicles move smoothly on the road or track. Older techniques include signs, signals, and markings. Newer technologiesinvolve Intelligent TransportationSystems , including Advanced Traveler Information Systems, such as variable message signs , and Advanced Traffic Control Systems, such as ramp meters . Human factors are an important aspectof transport engineering, particularly concerning driver-vehicle interface and user interface of road signs, signals, andmarkings.

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