Questions about the Traffic Flow poster

What’s on the Traffic Flow poster?

The rule, 3 worked examples, and the mistake everyone makes. Flow, density and speed are locked together: flow equals density multiplied by space…; q = k × v · q veh/h · k veh/km · v km/h; k 25 veh/km, v 80 = q = 2000 veh/h; Density near zero = Flow near zero; At jam density = Flow is zero again; Common mistake: Reading a high flow as free-flowing → The same flow happens twice. Educational reference. The fundamental diagram describes steady conditions on a section, not an incident or a queue front.

Who is the Traffic Flow poster for?

Traffic Flow belongs to the Civil Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning transportation can pin it up — a beginner, a student mid-course, or someone revising years later.

When should you use the Traffic Flow poster?

Interpreting loop or count data, and explaining why a road breaks down. A wall chart earns its place by being glanceable from where the work is happening, so Traffic Flow belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.

What other posters go with Traffic Flow?

CBR & Subgrade, Road Cross Section and Mass Haul sit alongside Traffic Flow in the Civil Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.CBR & SubgradeRoad Cross SectionMass Haul

Is the Traffic Flow poster free to download and print?

Yes. Traffic Flow downloads as a free PDF with no account, no email and no watermark, like everything else in the Civil Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence

What size does the Traffic Flow poster print at?

Traffic Flow is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Traffic Flow loses nothing.Printing guide