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Traffic engineering and urban-planning sketches

Traffic engineers, transportation planners, civil engineering consultants, and urban-design teams regularly produce top-down road and intersection diagrams — for traffic studies, scoping documents, public-meeting slides, internal review presentations, and client deliverables.

Dedicated tools in transportation analysis

Section titled “Dedicated tools in transportation analysis”

Production traffic engineering uses specialised analysis and design software that drawtonomy doesn’t replace:

  • Synchro / SimTraffic (Trafficware) — widely used for traffic signal operational evaluations.
  • Passer and similar signal-optimisation packages.
  • VISSIM (PTV Group) and Aimsun — microsimulation for traffic flow analysis.
  • AutoCAD Civil 3D — civil-engineering-grade road design.
  • MicroStation / OpenRoads (Bentley) — alternative civil road design platform.
  • Maptitude — GIS-based transportation planning and routing.
  • The Highway Capacity Manual (Transportation Research Board) as the methodological reference for capacity analysis.
  • For HD-map-grade road geometry: MathWorks RoadRunner and similar tools (see our RoadRunner comparison).

These are what serious traffic engineering and urban planning work runs on, and they should remain the foundation of any analysis or design that informs construction decisions.

Where drawtonomy might help

Section titled “Where drawtonomy might help”

drawtonomy is a free browser-based whiteboard with driving-domain shapes built in. It isn’t a traffic-analysis tool, and it doesn’t perform capacity calculations, signal optimisation, or microsimulation. What it can do:

  • Produce a clean top-down figure of a proposed intersection layout for a public meeting slide.
  • Sketch a Complete Street cross-section concept for early stakeholder discussions.
  • Annotate a satellite or roadmap background with proposed turn restrictions or new bike lanes.
  • Build reusable .drawtonomy.svg sources for figures that go into multiple deliverables.
  • Bring lane connection awareness (next / previous / left / right) into a 2D sketch — useful when a layout depends on lane-level routing.

Keep the .drawtonomy.svg file as the editable source — reports and public-meeting materials go through several rounds of revision, and a re-editable file saves a lot of redraws. From the same scene, export PNG with a transparent background for slides and Word reports.

What drawtonomy isn’t:

  • A capacity or signal-optimisation tool.
  • A microsimulation platform.
  • A survey-grade CAD design package.
  • A GIS or transportation-modelling system.

For any of these, use the dedicated software above.

A reasonable pattern

Section titled “A reasonable pattern”

The analysis and detailed design stay in your existing transportation engineering toolchain. When you need a clean conceptual figure — for the slide that introduces the intersection before showing the Synchro results, or the public-meeting deck that explains the proposed change in plain language — drawtonomy can produce that figure faster than generic drawing tools.

Section titled “Related reading”