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. There are no subscriptions. You either use it for free or pay a simple one-time fee per project. 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
- 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.
- Swept Path Analysis: A Visual Guide to How Vehicles Turn
What swept path analysis is, the geometry behind it, and a worked pen-and-paper example. A universal civil-engineering primer with diagrams, formulas, and a step-by-step calculation for a typical passenger car.
Blog posts
- 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 3 August 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
Swept path analysis software compared for 2026: browser-based tools, CAD add-ons and desktop suites, with verified pricing, vehicle libraries and trials.
- 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 Export: From Any Site Plan into AutoCAD
Export any calibrated swept path analysis as DXF 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 65 official design vehicles (RBSV 2020, AASHTO 2018, Austroads 2023 and UK libraries), custom vehicles, CAD upload, and DXF export with the one-time Projekt Pass.