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drawtonomy vs AccidentSketch.com

AccidentSketch.com is a free online tool designed for ordinary users (mostly drivers themselves) who want to document a road accident graphically. It runs entirely in the browser and is intentionally simple.

What AccidentSketch.com covers (per the official site and product descriptions):

  • A drag-and-drop interface with a toolbox of lines, squares, arrows, skid marks, and text boxes.
  • A selection of matching vehicle icons, with color and license-plate labelling.
  • Vehicle rotation and positioning.
  • The ability to attach photos, documents, and expert reports to a single accident file.
  • A printable or emailable sketch that can go straight to an insurer.
  • Free account-based usage from any device with a browser.

It’s a deliberately narrow tool focused on the personal accident-report use case.

drawtonomy and AccidentSketch.com both live in the “free browser tool for road scenes” space, but the focus is different. AccidentSketch.com is purpose-built for accident reports; drawtonomy is built around driving scenarios more broadly, with autonomous-driving roots.

What drawtonomy adds beyond accident reports:

  • Lane semantics: lanes carry direction and next/previous/left/right connections. Useful for any scene where lane structure matters, not just collisions.
  • OpenSCENARIO 1.3 / OpenDRIVE 1.8 export for esmini playback (a niche need for accident reports, but central for AV work).
  • Lanelet2 OSM round-trip, AI Scene Generator, ROS occupancy grid import.
  • A wider set of vehicle, pedestrian, and traffic-light shapes (sedans, buses, trucks, motorcycles, walking/standing pedestrians, traffic-light states).
  • Re-editable .drawtonomy.svg format that preserves shape and connection structure.

What AccidentSketch.com does better:

  • Purpose-built for personal accident sketches: the UI flow matches that specific use case.
  • Storing the whole accident file (sketch + photos + documents) in one place, accessible from anywhere.
  • A simpler learning curve for first-time users with no diagramming background.

A reasonable pattern: AccidentSketch.com if your only goal is a personal accident sketch for an insurance claim. drawtonomy if you also want lane semantics, OpenSCENARIO export, or you’re using the same canvas for autonomous-driving / educational / consulting work.

In the same browser-road-diagram community

Section titled “In the same browser-road-diagram community”

AccidentSketch.com, drawtonomy, SmartDraw, and Easy Street Draw all share an interest in making top-down road sketches accessible. AccidentSketch.com covers the personal-use side, Easy Street Draw covers the law-enforcement / insurance professional side, SmartDraw covers the broad cross-domain side, and drawtonomy covers the autonomous-driving and ADAS side. Each tool optimizes for its own audience.