Residential driveway gradient complianceDesign it right.Draft it once.
Design software for residential driveways on sloping sites. It solves the gradient, simulates the customer’s vehicle, and exports the CAD drawing — all at the click of a button.
Built for Australian residential driveways · No card required · Cancel anytime
Analysing
Toyota RAV4 2024
Medium SUV · 4,600 mm · 17.5°/20°
Worst clearance
+61 mm
underbody · 7.40 m
It even designs itself. The auto profile designer works through thousands of candidate layouts, keeps the compliant ones, and ranks them on gradient, smoothness and simplicity — then tells you why it chose that shape.
- Compliant profile from three inputs
- 952 vehicles, SAE J689 angles
- DXF, DWG, PDF at any scale
- Scrape risk found before it is concrete
- 952
- Vehicles modelled
- 104 with per-generation dimensions
- SAE J689
- Angle standard
- Approach & departure geometry
- 6
- Export formats
- DXF · DWG · PDF · SVG · PNG · JPG
- 1:8
- Rate-of-change check
- Flagged over any 1 m length
Built to be drawn on
Every image below is real output
Not mockups. These come straight out of the calculator’s own renderer and export pipeline — and every export option on them, from lineweights and fonts to slab hatching, is customisable to your own drawing standards.
A compliant profile, in one click
Enter the boundary level, the length and where the garage slab has to land. DrivewayIQ solves the zones, holds every transition inside the limits, and flags any rate of change worse than 1:8 over a metre. What comes back is drafted rather than sketched — one dimension run ticked at every zone, leader lines to the points that carry a level, and reduced levels to the millimetre on both the platform and the slab. Five solved blocks below, from a 6 m tight rise to 14 m of shallow fall.
The job it replaces
Right now, someone in your office draws this by hand
Every sloping block needs a driveway long section: levels off the survey, gradients worked out on a calculator, the profile drawn and dimensioned in CAD, then checked against the standard. It is careful, repetitive work, it earns nothing on its own, and it starts again the moment a level changes.
DrivewayIQ automates the whole task.
Exported as a DWG that drops straight into your drawing.
By hand, today
Hours you cannot bill twice
- Levels retyped off the survey
- Gradients worked out on a calculator
- Every transition checked by hand
- Long section drawn from scratch in CAD
- Every RL and length typed in again
- All of it redone when a level changes
And if a transposed level makes it to site, the driveway is already poured.
With DrivewayIQ
Minutes, and nothing left to get wrong
- Levels read straight into the drawing
- Gradients solved for you
- Checked against AS 2890.1 as it designs
- Long section drawn and dimensioned for you
- A real vehicle driven over it for clearance
- Re-solves the moment a level changes
The levels are never retyped, because the drawing is generated from them. Multiply the hours you get back by your rate, then by the driveways you do in a year — you know that number better than we do.
It arrives as CAD, not a picture
Profile, zones, dimensions, levels and slab each on their own layer with their own lineweights — editable, snappable, yours.
Already at your drawing scale
Export at 1:100, 1:50 or anything else. Text and dimensions are sized for the sheet, so it needs no rework once it lands.
Opens in what you already use
DWG and DXF for AutoCAD, BricsCAD and Revit. PDF, SVG and raster for everyone else on the job.
Vehicle height clearance simulator
Built on SAE J689.Solved to the millimetre.
DrivewayIQ simulates and analyses a real vehicle access scenario across your driveway profile — modelling how the chosen vehicle actually behaves on the surface, how the body pitches over each grade change, and where the front overhang, underbody and rear overhang come closest to grounding.
- Real geometry, not a rule of thumb
- Approach and departure angles follow SAE J689, measured from the tyre contact patch to the lowest forward-most and rear-most point.
- The wheel knows where the ground is
- Axle height is solved from a rolling wheel envelope, so the body pitches over a crest exactly as it would on site.
- Conservative by design
- Where a clearance point is estimated, the simulation takes the lowest — it errs toward predicting a scrape rather than missing one.
Measured in accordance with SAE J689. Approach and departure angles are taken from the tyre contact patch to the lowest forward-most and rear-most point, exactly as the standard defines them — not inferred from a quoted ground clearance figure.
Front
+34 mm
Underbody
+145 mm
Rear
+95 mm
Real output. A Toyota Camry 2024 on a 10 m driveway falling 0.43 m — worst clearance 34.4 mm (front overhang) at 9.502 m. Passes, but tight.
Vehicle dimensions — length, width, height, wheelbase and both overhangs — are taken from manufacturer published specifications, and approach and departure angles follow SAE J689, measured from the tyre contact patch to the lowest forward-most and rear-most point. Underbody clearance heights are engineering estimates — no manufacturer publishes them — and the simulation always takes the lowest, so it errs toward predicting a scrape.
How it works
Three inputs to a compliant drawing
Enter three numbers
Boundary level, driveway length, and where the garage slab has to land. Slab type and door rebate are picked from a list.
Let it solve the profile
The auto profile designer builds every layout the site allows, discards the ones that break a limit, and ranks what is left on gradient, smoothness and simplicity — then tells you in plain English why it chose that shape.
Check it, then issue it
Run a vehicle over it, adjust anything by hand, preview the sheet, and export to CAD at your drawing scale.
Data you can question
We tell you which numbers are measured and which are estimated
Every vehicle in DrivewayIQ carries a statement of what its figures represent — shown right where you pick it, not buried in a policy page.
Read the methodologyOverall dimensions
Length, width, height, wheelbase and overhangs from manufacturer figures. Every one of the 952 entries is checked so wheelbase plus both overhangs equals overall length, to the millimetre.
Approach & departure angles
Measured from the tyre contact patch to the lowest forward-most and rear-most point of the vehicle.
Underbody clearance heights
No manufacturer publishes exhaust or crossmember heights, so these are derived from body type, drivetrain and platform. The simulation always takes the lowest, so it errs toward predicting a scrape.
Per-generation dimensions
Every dual-cab ute carries real per-generation figures — a 2015 Ranger and a 2024 Ranger are different vehicles and are modelled as such. Other models are labelled model-representative.
Stop finding out on pour day.
Design it, prove it clears, and issue the drawing — in the time it takes to sketch one by hand.
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