∑ mathify.us · Civil Engineering · Transportation
Transportation Engineering
Traffic flow, highway design, signal timing, and level of service — the math that keeps cities moving.
✓ 1 Active Lesson ✓ 4+ Calculators ✓ 2 Simulations ✓ HCM Standards
01 — Lessons
LIVE 01 Traffic Design Fundamentals Flow theory, Greenshields model, LOS A–F, Webster’s signal timing, stopping sight distance. University → Professional Open Lesson →
Soon 02 Highway Geometric Design Horizontal curves, vertical alignment, superelevation, sight distance for curves. University → Professional
Soon 03 Traffic Signal Systems Multi-phase signals, actuated control, coordination, progression. University → Professional
Soon 04 Pavement Design AASHTO method, structural numbers, layer coefficients, drainage. University → Professional
Soon 05 Traffic Impact Studies Trip generation, distribution, assignment, mitigation measures. University → Professional
Soon 06 Public Transport Planning Headways, capacity, modal split, network design. University → Professional
02 — Key Formulas
Fundamental Flow
$$q = u \cdot k$$
flow = speed × density
Webster’s Cycle
$$C_0 = \dfrac{1.5L + 5}{1 - Y}$$
optimal signal cycle length
Stopping Sight Distance
$$\text{SSD} = 0.278Vt + \dfrac{V^2}{254f}$$
AASHTO model
03 — About This Section
Transportation engineering sits at the intersection of physics, statistics, and human behaviour. We study how people and goods move through space — and how to make that movement safer, faster, and more efficient.