Roadscape 3D Swept-Path
run a normal vehicle turn - radius, curb, lane, speed
Vehicle Lane standard 10 ft narrow/local 10.5 ft city default 11 ft standard 12 ft truck/bus lane Two-lane turn Three-lane turn Four-lane ramp turn Curb standard standard rounded curb - 6 in vertical/block curb - 6 in mountable truck apron - 3 in wide rolled residential curb - 4 in custom curb Speed control before turn none short speed hump - 3 in, 12 ft, 45 ft before long speed table - 3.5 in, 22 ft, 60 ft before raised crosswalk - 4 in, 30 ft, 75 ft before truck-friendly table - 2.5 in, 30 ft before custom control Ready
Effective speed10 mph
Curb/rub zone0%
Adjacent exposureclear
Rollover risklow
Run vehicle Auto run
Best safety Start over
Compare default fixes
Bigger radius clearance firstWider turn lanes room for trucksTruck apron less curb hitBalanced fix safer + flow
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Analysis model: deterministic swept path plus simplified speed/curb/load risk. Official engineering or crash conclusions require qualified professional review.