About PathSweeper
PathSweeper is swept path analysis that runs entirely in your browser: no CAD seat, no subscription, no data harvesting. It is an independent, one-person project based in Munich, Germany.
Who is behind PathSweeper
Joël Marth
Founder and developer, M.Sc. Physics (Nuclear, Particle, and Astrophysics) at TU Munich
You talk directly to the person who writes the code: PathSweeper is built and maintained by one person, Joël Marth, in Munich, Germany. Questions, bug reports, and feature requests reach me directly at joel@pathsweeper.com.
Connect on LinkedInWhy I built PathSweeper
I started PathSweeper as a side project. I study physics at the Technical University of Munich (TUM) and I am into web development, and swept path analysis was a way to combine both: a problem where the math actually matters in the real world, like working out whether a truck can fit through a narrow gate.
When I looked at the established industry software to see how it handled the geometry, I could not believe the pricing. Hundreds or thousands of euros a year. Subscription after subscription. A tool locked behind paywalls for something that, at its core, is not that complicated.
So I made PathSweeper different. Nobody is forced into a subscription: you use it for free, pay once per project, or take an annual pass only if you need it every week. All data stays strictly on EU servers. I will never sell it, and I will never feed it to an AI company.
I am tired of the modern software pattern where you rent your tools forever while they harvest your data and keep raising the price. Plenty of other planners and engineers feel the same way, so this is my alternative.
Articles by Joël Marth
Every guide and blog post on PathSweeper is written by me. Guides are evergreen reference pages on a whole topic; blog posts go deep on a single question.
Guides
- Switching from AutoTURN Online to PathSweeper
How to move swept-path work from AutoTURN Online (now part of InSTRATO) to PathSweeper: who it suits, the five steps from CAD export back to CAD, what carries over and what does not, accuracy and pricing.
- Engine Validation: PathSweeper Against AutoTURN Online Reference Exports
How PathSweeper's swept-path engine was cross-checked against AutoTURN Online exports for all 13 German RBSV 2020 design vehicles: method, per-vehicle deviation table and the known differences.
- Austroads Design Vehicles (Australia): Free Sources for Swept-Path Work
How Australian swept-path regulation works: Austroads AP-G34 design-vehicle and turning-path templates are a free PDF/DWG download, statutory limits are public via the NHVR, and only the Standards Australia AS 2890 series is paywalled. Every figure links to the exact source page.
- AASHTO Green Book Design Vehicles: Sources, Access and Free Alternatives (USA)
AASHTO design vehicles (P, SU-30, BUS-40, WB-62, WB-67…) explained: what the codes actually mean, why the Green Book is paywalled, how to obtain the values legally, and which free public sources (FHWA, 23 CFR, state DOT manuals) are enough for pre-design swept-path work.
- UK Design Vehicles for Swept-Path Work: DB32 Turning Circles, DMRB and Manual for Streets
Which document governs your swept-path check: DB32 turning circles for residential schemes, DMRB CD 116/CD 123 on the Strategic Road Network, Manual for Streets, FTA design vehicles for freight access. What is free, what is paid, and what the highway officer will cite.
- Fire Truck Access (DIN 14090): Sources and Alternatives
Fire truck access in Germany and the US: what DIN 14090, IFC and NFPA actually regulate, why the official standard is a paid publication, how to source it legally, and which values you may use freely for pre-design.
- RBSV 2020 Design Vehicles: Sources and Alternatives
RBSV 2020 design vehicles explained: what they are, how to obtain the official dimensions, which tools include the RBSV 2020 design vehicles, and which free alternatives are sufficient for pre-design and feasibility studies.
- What Is Swept Path Analysis? Geometry, Worked Example and How to Do One
Swept path analysis explained with a worked pen-and-paper example: the geometry, who needs it and when, and how to run one free in the browser in five minutes.
Blog posts
- Swept Path Analysis in SketchUp, Revit and Civil 3D: Add-ins and the Browser Round Trip
Swept path analysis in SketchUp, Revit and Civil 3D: which program has an add-in, which has none we can cite, and how to export the plan, run the swept path in the browser and bring the result back as DXF, DWG or an image.
- How to Create a Swept Path Diagram Without CAD: Click by Click, With Two Australian Examples
How to create a swept path diagram without CAD: upload the site plan, calibrate the scale, pick the design vehicle, draw the path, read the envelope and clearance, and export the sheet. Worked through for a B99 car and an HRV at a loading dock.
- AutoTURN Online Pricing 2026: What It Costs, Region by Region
AutoTURN Online costs $680 per year or $100 per month in the US and €630 per year in the EU, excluding taxes (as of 27 September 2026). All regional list prices, licence details and a cheaper alternative.
- PathSweeper Enterprise: Vehicle Studio, your own fleet, data sovereignty
Three reasons for PathSweeper Enterprise: the Vehicle Studio for complex vehicle combinations, your own vehicle fleet in the vehicle selector, and full data sovereignty on a dedicated instance with its own database in Germany, with a negotiable DPA and no third-country transfers.
- Swept Path Analysis Software in 2026: Browser Tools, CAD Add-ons and Desktop Suites Compared
Free browser tools, CAD add-ons and desktop suites for swept path analysis compared for 2026, with verified pricing, vehicle libraries and trials, and which one fits an occasional check.
- Articulated Vehicle Swept Paths: Truck and Trailer, Semi and Articulated Bus
Articulated vehicles in PathSweeper: swept paths for truck-and-trailer combinations, centre-axle trailers, semi-trailers and articulated buses, computed live in the browser with articulation-angle monitoring.
- Realistic Swept Path Simulation with Rate-Limited Steering
Realistic swept path simulation in the browser: rate-limited steering replaces the instant arc with a clothoid wheel-swing, like desktop tools. Try it free, save with a one-time Projekt Pass.
- Swept Path DXF & DWG Export: From Any Site Plan into AutoCAD
Export any calibrated swept path analysis as DXF or DWG for AutoCAD, BricsCAD or Allplan. A placeable reference point becomes (0,0) so it snaps exactly into place.
- Semi-Trailer Swept Path: Kinematics, Hinge Angle and German Statutory Dimensions
Swept paths for semi-trailer trucks: how an articulated tractor + trailer corners, max 16.50 m per § 32 StVZO, typical curve radii, and what planners need to watch out for.
- BO-Kraftkreis (§ 32d StVZO) Explained: The Free Alternative to RBSV 2020
What is the BO-Kraftkreis? § 32d StVZO explained simply: outer 12.50 m, inner 5.30 m, public-domain, and the pragmatic way to plan swept paths without buying the RBSV 2020.
- Turning Bay Design for Dead-Ends: Variants, Source Standards and Common Mistakes
Turning bays in dead-end streets: hammerhead, T-shape and circular variants, why the exact dimensions reside in the official RASt 06, public-domain sources for pre-design and the most common planning mistakes.
- Garbage Truck Dimensions: How to Find Binding Values by Country
How planners in the US, UK, Australia, Canada and Germany find legally usable garbage truck dimensions: which official design-vehicle catalogue to obtain, which statutory maxima are free to cite, and which manufacturer datasheets give defensible pre-design values.
Your data stays yours
PathSweeper is built privacy-first: no tracking cookies, no data resale, no AI training.
EU hosting
Your plans and uploads are hosted on servers in the EU (Germany, Hetzner).
Encrypted in transit
Every connection runs over HTTPS/TLS.
No third-party tracking
No tracking cookies and no ad networks. Only self-hosted, IP-anonymised analytics.
Never used to train AI
Your plans and uploads are never sold and never used to train AI models.
Files auto-deleted
Uploaded CAD files are automatically deleted one hour after conversion.
GDPR-compliant
Data protection under the GDPR. No account required for the core workflow.
Try it in your browser
Calculate a swept path for free, with no install and no account. Unlock 116 design vehicles from 11 national libraries (RBSV 2020, AASHTO, Austroads, UK (DB32/FTA), CERTU (France), Norma 3.1-IC/Spain, 道路構造令/Japan, MOLIT/South Korea, 市區道路設計規範/Taiwan, TPDM/Hong Kong), custom vehicles, CAD upload, and DXF/DWG export with the one-time Project Pass.