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16-Civ-B10 Traffic Engineering: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Definitions and Discussion
  2. Question 2 Single-Channel Queueing at a Drive-Thru
  3. Question 3 Deterministic Queueing at a Bridge Lane Closure
  4. Question 4 Crest Vertical Curves and Stopping Sight Distance
  5. Question 5 Total Delay at a Signal Approach
  6. Question 6 Webster Signal Design for a Four-Leg Intersection
  7. Question 7 Critical Lanes, Left-Turn Adjustment and Green Splits

Start with Question 1 →

Paper format. National Examinations, May 2017 — 16-Civ-B10 Traffic Engineering. Three-hour duration; OPEN BOOK, any non-communicating calculator permitted. Seven questions, all of equal value (20 marks each), with the mark split for each printed in the paper's own grading scheme. The paper states that a total of five solutions is required and that only the first five as they appear in the answer book will be marked. All seven questions are solved here, because this set is a study resource rather than a sitting. The paper also permits assumptions — “Any data required, but not given, can be assumed” and “the candidate is urged to submit… a clear statement of any assumptions made” — so every assumed value below is stated explicitly where it is used.

Reference texts. Garber, N. J. & Hoel, L. A., Traffic and Highway Engineering, 5th ed. (Cengage) — the core reference for this exam code; Transportation Association of Canada, Geometric Design Guide for Canadian Roads (TAC GDG); AASHTO, A Policy on Geometric Design of Highways and Streets (the “Green Book”, 2001 edition — the source of the stopping-sight-distance table printed on this paper); Transportation Research Board, Highway Capacity Manual (HCM); Transportation Association of Canada, Manual of Uniform Traffic Control Devices for Canada (MUTCDC); Webster, F. V. & Cobbe, B. M., Traffic Signals, Road Research Technical Paper 56 (HMSO). Canadian practice governs wherever the paper does not name a standard.