Here is the definition of transportation engineering according to Wikipedia:Transportation engineering is the application of technology and scientific principles to the planning, functional design, operation and management of facilities for any mode of transportation in order to provide for the safe, efficient, rapid, comfortable, convenient, economical, and environmentally compatible movement of people and goods. A knowledge of the following is required for FE exam:
Streets and Highways
Intersection Design
Traffic Analysis and Control
Safety
Capacity
Traffic flow
Traffic control devices