The worry with any car park layout: bays that look fine on the drawing, but a car can't…
🚗 The worry with any car park layout: bays that look fine on the drawing, but a car can't get into. I built a free tool that drives a car into and out of every bay.
HK Swept Path (new on anzonwong.com Lab):
・Upload a car park plan: PDF, image or DXF
・Two clicks to set the scale, then mark the entrance, exit and bays
・Pick a vehicle: 8 preset vehicles, from a private car, van, light bus and coach to a container truck
・One click and every bay gets its in and out swept paths: green parks in one manoeuvre (at most one gear change), amber needs extra shunts, red can't get in, with the clash painted where it happens
・Export a layered DXF, a PNG and a one-page PDF
・Free, no sign-in, English and Chinese, and it all runs in your browser: your plan never leaves your computer
Tested on fictional sample plans:
・6.0 m aisle: all 42 bays green, in about 26 seconds
・Aisle cut to 4.5 m: 40 red, 1 amber, 1 green
・6.0 m aisle plus one riser at a bay mouth: 40 green, 1 amber, 1 red
・Container truck: both loading bays green
How it was made: the direction and decisions are mine; my AI agent wrote the code and the tests.
How it was made: the direction and decisions are mine; my AI agent wrote the code and the tests. Turning radii match the presets, and an independent Python check of the swept envelope agrees within 0.1%.
The caveat: a hobby tool for a sketch-stage self-check. It is not a submission tool and not a substitute for a traffic consultant.
・Walls drawn only as hatching or an outline (typical blockwork) are not detected: trace them with the Wall tool, or the car drives straight through them.
Link: https://anzonwong.com/lab/hk-swept-path/?utm_source=fb&utm_medium=social&utm_campaign=2026-W45
Where do your car park layouts usually get stuck? Tell me what you think in the comments 👇
