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Transportation Engineering

Transportation Engineering for GATE Civil Engineering, one topic per lesson: the theory in plain words, the formulas, a solved example, and GATE-style questions (MCQ, MSQ and NAT) whose numerical answers are recomputed by a program when the site is built.

Start the first lesson

1Highway Design

  1. Highway Geometric Design: Sight Distance and CurvesStopping and overtaking sight distance, superelevation and friction, extra widening, transition curve length, set-back distance, and summit and valley vertical curves as per IRC.

2Pavements

  1. Pavement Materials: Soil, Aggregates and BitumenSubgrade soil tests (CBR, plate bearing), aggregate tests (crushing, abrasion, impact, shape), bitumen tests (penetration, ductility, softening point, viscosity grades) and Marshall mix design.
  2. Flexible and Rigid Pavement DesignFlexible pavement design with traffic in msa, vehicle damage factor and fourth power law, CBR method, rigid pavement stresses (Westergaard), radius of relative stiffness, temperature stresses and joints.

3Traffic

  1. Traffic Engineering: Flow, Capacity and Signal DesignTraffic stream parameters, fundamental relation q = kv, Greenshields model, capacity, spot and journey speed studies, PCU, and traffic signal design by Webster's method.