What’s on the Level of Service poster
A 6-row table: Grade · What the driver gets.
From free flow to breakdown. Thresholds vary by road type.
- A — Free flow, speed unaffected
- B — Stable, slight loss of freedom
- C — Stable, manoeuvring restricted
- D — Near unstable, little comfort left
- E — At capacity, any disruption queues
- F — Breakdown, stop-start queuing
Educational reference. Thresholds differ between manuals and road types. Use the standard your authority adopts.
Questions about the Level of Service poster
- What’s on the Level of Service poster?
- A 6-row table: Grade · What the driver gets. From free flow to breakdown. Thresholds vary by road type. A — Free flow, speed unaffected; B — Stable, slight loss of freedom; C — Stable, manoeuvring restricted; D — Near unstable, little comfort left; E — At capacity, any disruption queues; F — Breakdown, stop-start queuing. Educational reference. Thresholds differ between manuals and road types. Use the standard your authority adopts.
- Who is the Level of Service poster for?
- Level of Service 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 Level of Service poster?
- Reporting a capacity assessment to people who are not engineers. A wall chart earns its place by being glanceable from where the work is happening, so Level of Service belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Level of Service?
- CBR & Subgrade, Road Cross Section and Mass Haul sit alongside Level of Service 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 Level of Service poster free to download and print?
- Yes. Level of Service 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 Level of Service poster print at?
- Level of Service 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 Level of Service loses nothing.Printing guide
Related posters
Charts that sit alongside Level of Service on the same wall.
Browse every Civil Engineering poster, or start from the full catalogue.