Road safety and physical AI demos

The demos

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  LiveRoad safety · Physical AI

  Sun Glare Atlas

  What it is

  A map of Sussex roads with a time slider: roads glow gold at the exact minutes drivers stare into a low sun, worked out from where the sun really is and whether hills block it.

  What it found

  Across Britain, driving into a low sun goes with about 7.5% more crashes than driving away from it. Sun angle alone cannot pick out single danger spots, and the page says so.

  Why it matters

  Physically based light on a real road network, for councils and highway authorities, fleet operators, insurers and road safety charities. A timely story around each clock change.

  Note: Modelled glare assumes a clear sky; the into-sun figure is not adjusted for season (adjusting shrinks it to about 3 to 5%).

  Used

  • NVIDIA Warp
  • NVIDIA Omniverse
  • MapMap terrain pipeline
  • Pre-registered tests

  What each technology did here

  • NVIDIA Warp · NVIDIA

    The skyline step as one Warp kernel gives the CPU's answer on every one of 2.8 million Sussex rays, then covered every road in Great Britain (hills only) in 3.8 seconds of GPU kernel time on one rented GPU.

    NVIDIA's Python framework for writing physics and simulation code that runs on a GPU, or on a CPU.

  • NVIDIA Omniverse · NVIDIA

    One bend the atlas flags, on the A259 near Bognor Regis, path-traced from the driver's eye at its modelled glare minute. The picture is rendered and the minute modelled.

    NVIDIA's platform for building and rendering 3D scenes. We open stages headless through Isaac Sim and path-trace them.

  • MapMap terrain pipeline · MapMap

    The skyline each road sees, cut from Environment Agency LiDAR.

    MapMap's pipeline that turns Environment Agency laser scans into road-level terrain.

  • Pre-registered tests · MapMap

    The into-sun test and its rain placebo were fixed before the collision data was opened.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 27 Oct 2026

  Data: OS Open Roads, Environment Agency LiDAR, STATS19 collision records, OS Terrain 50

• 
  LiveRoad safety

  Speed limits: Wales 20 mph

  What it is

  Did the Welsh 20 mph default cut crashes? Wales is compared with similar English areas that did not change, built from public data with the test written before the data was opened.

  What it found

  All collisions on 20 and 30 mph roads fell against the comparison (0.77), with no change on faster roads where nothing changed. Serious collisions read 0.85 across Wales but show no clear change without North Wales Police's area (0.94), so the page does not read them as fewer.

  Why it matters

  One of the most argued-over road policies in the UK, with a neutral result anyone can check, for governments and councils reviewing speed limits, transport authorities and road safety charities.

  Note: No NVIDIA technology is used here and none is claimed. Neutral by design: no recommendation. Possible changes in how North Wales records collisions are flagged.

  Used

  • Pre-registered tests

  What each technology did here

  • Pre-registered tests · MapMap

    A matched comparison with the test written before the data was opened.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 23 Oct 2026

  Data: STATS19 collision records, OS Open Roads, Welsh Government speed limit data

• 
  LiveRoad safety · Infrastructure

  Wet roads on England's trunk network

  What it is

  England's motorways and trunk roads screened for dips from laser terrain scans (4,779 segments have a hollow deeper than the scans' 15 cm error), then a test of whether wet-weather crashes cluster there, with the pass bar fixed before it ran.

  What it found

  Not met: terrain adds 14% over the crash record alone, short of the 20% bar set in advance. The stretches it flags are where past wet-road crashes cluster, mostly busy motorways, not the dips.

  Why it matters

  The honest national screening step before anyone claims to know where wet roads are dangerous, for highway operators' drainage and safety teams and for insurers.

  Used

  • NVIDIA Warp
  • MapMap terrain pipeline
  • Pre-registered tests

  What each technology did here

  • NVIDIA Warp · NVIDIA

    The national crash test was not met; as a follow-on, our Warp shallow-water solver ran 330 times on one rented NVIDIA RTX 6000 Ada at 15 sites chosen by a rule fixed in advance (the strongest dips where wet-road crashes cluster), with a synthetic storm. With only the EA drainage allowance and no gullies, water stands at all 15 in the model; GPU and CPU agree at 11 of 15.

    NVIDIA's Python framework for writing physics and simulation code that runs on a GPU, or on a CPU.

  • MapMap terrain pipeline · MapMap

    Dips and flat spots along the whole trunk network from Environment Agency 2 m LiDAR.

    MapMap's pipeline that turns Environment Agency laser scans into road-level terrain.

  • Pre-registered tests · MapMap

    The 20% bar (a gain of 1.2) was set before the model saw the held-out crashes, and the miss is on the page.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 27 Oct 2026

  Data: Environment Agency LiDAR, OS Open Roads, STATS19 collision records

• 
  LiveAutomotive and AV · Road safety

  Roundabout driving envelope (method check)

  What it is

  Thousands of real cars entering roundabouts from an open Australian dataset (left-hand traffic, like the UK), turned into a band of normal driving and tested on recording hours it had not seen.

  What it found

  The band held its 93 to 97% target on all six busy entrances, but it cannot tell straight-on from turning cars, and a band from one roundabout did not carry to others (1 of 5). Both failures are shown. On generated clips of a Sussex roundabout, Alpamayo 2 Super's paths sat outside the band at 66% of points, against under 1% for real drivers.

  Why it matters

  The measuring tool an AV safety case needs, done in public on left-hand traffic, for UK regulators, AV companies applying for UK permits and academic reviewers.

  Note: Australian data, used as a method check; never presented as a UK result. CC BY 4.0, credited to the dataset authors.

  Used

  • Cosmos3-Nano-Transfer-Auto
  • Alpamayo 2 Super
  • Pre-registered tests

  What each technology did here

  • Cosmos3-Nano-Transfer-Auto · NVIDIA

    The input: Cosmos3-Nano-Transfer-Auto clips of Lancing Manor generated on 24 Oct 2026, reused here with no new generation.

    NVIDIA's world model that paints realistic multi-camera driving footage from a labelled scene.

  • Alpamayo 2 Super · NVIDIA

    Run on 27 Oct 2026 on generated clips of Lancing Manor Roundabout (not real driving), scored against the band's width with a mirrored-world control, both fixed in advance: Alpamayo 2 Super's paths were outside the band at 66% of points, against under 1% for real drivers; the mirrored world made no clear difference.

    NVIDIA's open driving model: given camera frames, it proposes where the car should go next.

  • Pre-registered tests · MapMap

    Calibration target and held-out hours fixed in advance; both failures reported.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 27 Oct 2026

  Data: University of Sydney roundabout dataset (CC BY 4.0)

• 
  LiveRoad safety · Mobility · Infrastructure

  Low Bridge Watch

  What it is

  4,304 low bridges on British roads, Network Rail's most-struck bridges, and a check that shows the car route going under a bridge and the height-aware lorry route going round.

  What it found

  Our bridge-strike ranking puts 11 of the 14 most-struck bridges on Network Rail's published list in its top 5%. At the A5 bridge at Hinckley, struck 22 times in 2024/25, a 4.80 m lorry has to go round: 13.3 km and 22 minutes more. Truck routing kept the lorry from passing under all 19 bridges the car route passed under. Fleet day: NVIDIA cuOpt planned 30 drops in Birmingham for 4.5 m lorries with none of its 33 legs under a bridge signed lower in OpenStreetMap (the heights the router reads); the same day planned on a car matrix sent 2 legs under railway bridges signed 3.9 m and 4.2 m.

  Why it matters

  What a height-aware routing layer adds, for railway bridge owners, hauliers, fleet insurers, councils, and van and minibus drivers.

  Note: Advisory only, from map data that can be wrong or out of date.

  Used

  • NVIDIA cuOpt
  • MapMap routing
  • Pre-registered tests

  What each technology did here

  • NVIDIA cuOpt · NVIDIA

    A pre-registered fleet day: cuOpt 26.10 on an NVIDIA A40 planned 30 drops for 4.5 m lorries on MapMap's height-aware truck matrix, and none of its 33 legs went under a bridge signed lower in OpenStreetMap (the same heights the router reads). VROOM found the same plan.

    NVIDIA's GPU route optimiser for fleets and deliveries.

  • MapMap routing · MapMap

    Car and truck routes through the same bridges; the truck route respects the signed height.

    MapMap's routing engine, including truck routing that respects vehicle height, and live closures that redraw routes.

  • Pre-registered tests · MapMap

    The strike-ranking tests were pre-registered against Network Rail's published lists.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 27 Oct 2026

  Data: OpenStreetMap, Network Rail bridge strike lists, OS Open Roads

• 
  LiveRoad safety · Infrastructure · Physical AI

  Surface Water Twin, A27 Chichester bypass

  What it is

  A real storm (16 November 2022, from an Environment Agency rain gauge) rained onto a laser scan of the A27 Chichester bypass, with a shallow-water simulation showing where water gathers on the carriageway.

  What it found

  Whyke Roundabout pools to about 0.35 m in the model (0.17 to 0.50 m across 20 runs that vary the ground survey); with a drainage allowance only 1 of 8 ponds reaches 0.15 m. The crash check did not pass, and the page says so: the Environment Agency's flood map caught 2 of 21 flood-related crashes in Sussex, the same as simply using where crashes had happened before. The water model itself can't be checked this way, as no flood crashes have been recorded on this stretch since 2010.

  Why it matters

  Our own shallow-water solver, written in NVIDIA Warp, on real UK terrain with a real storm, for highway drainage and asset teams, flood authorities and insurers.

  Note: Modelled, not measured: the deepest water sits at the road's outer edge, which may be verge, and no gauge on the carriageway confirms the depths.

  Used

  • NVIDIA Warp
  • MapMap terrain pipeline
  • Pre-registered tests

  What each technology did here

  • NVIDIA Warp · NVIDIA

    The shallow-water solver is written in Warp 1.18 and ran on a CPU for this page.

    NVIDIA's Python framework for writing physics and simulation code that runs on a GPU, or on a CPU.

  • MapMap terrain pipeline · MapMap

    Environment Agency 1 m LiDAR of the bypass as the ground.

    MapMap's pipeline that turns Environment Agency laser scans into road-level terrain.

  • Pre-registered tests · MapMap

    Solver checks and the crash-record test were fixed in advance; the crash-record miss is on the page.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 23 Oct 2026

  Data: Environment Agency LiDAR, Environment Agency rain gauge (Fishbourne), OpenStreetMap, STATS19 collision records

• 
  LiveAutomotive and AV · Physical AI

  UK roundabout scene pack for AV simulators

  What it is

  Lancing Manor Roundabout compiled from open data (OpenStreetMap, OS Open Roads, Environment Agency LiDAR) into the files AV simulators load: OpenDRIVE, OpenUSD and NVIDIA's RDS-HQ scene format, with clockwise, left-hand lanes. A 1.13 MB pack you can download.

  What it found

  All eight checks set in advance pass: the ring turns clockwise, 75 of 75 lanes are valid, and 4 of 4 test cars complete in esmini (0 of 4 when switched to right-hand traffic, so the check is real). In CARLA one car first took a wrong exit; that was traced to CARLA's own traffic controller, not the pack, and that first fail stays on the page.

  Why it matters

  UK left-hand road geometry in the formats simulation tools read, for AV developers testing in left-hand countries and for simulation teams.

  Used

  • NVIDIA RDS-HQ
  • OpenUSD
  • ASAM OpenDRIVE
  • esmini
  • CARLA
  • MapMap scene compiler

  What each technology did here

  • NVIDIA RDS-HQ · NVIDIA

    The pack ships a complete RDS-HQ scene that matches the OpenDRIVE road to within 1 cm.

    NVIDIA's driving scene format (roads, lanes, objects and camera poses) that its simulation and world-model tools read.

  • OpenUSD · Open source and open standards

    The same scene as a USD stage.

    The open 3D scene format that Omniverse and many other 3D tools read.

  • ASAM OpenDRIVE · Open source and open standards

    The road network, lane by lane, validated by esmini and CARLA's reader.

    The open standard for describing road networks, lane by lane, that driving simulators load.

  • esmini · Open source and open standards

    4 of 4 test cars complete clockwise; 0 of 4 when switched to right-hand traffic.

    An open-source driving scenario simulator that loads OpenDRIVE roads.

  • CARLA · Open source and open standards

    Map reader agrees; a server run on 24 and 26 October traced a wrong exit to CARLA's controller, not the pack.

    The open-source driving simulator widely used in self-driving research.

  • MapMap scene compiler · MapMap

    Open map data to OpenDRIVE, OpenUSD and RDS-HQ.

    MapMap's compiler from open map data to the scene files simulators load: OpenDRIVE, OpenUSD and RDS-HQ.

  Open the demoUpdated 26 Oct 2026

  Data: OpenStreetMap, OS Open Roads, Environment Agency LiDAR

• 
  LiveAutomotive and AV · Road safety · Physical AI

  Observed driving envelope (UK pilot)

  What it is

  One driver's twelve passes round a Worthing loop become a band of how a human really drove it, and the paths from NVIDIA's Alpamayo driving model are measured against that band in 3D.

  What it found

  A pilot with one driver and twelve passes, which the calibration test set in advance found too few to calibrate. Alpamayo's paths leave the driver's band 45 percentage points more often than the driver's own passes do. Mirroring the scene to right-hand traffic made no difference, so this test finds no sign that the gap comes from UK left-hand traffic.

  Why it matters

  A ruler for driving models on a real UK street, to rerun on every model release rather than a critique, for UK regulators, transport authorities and AV operators.

  Note: Passes over the 30 mph limit are drawn as over the limit, never as careful driving. The counts of wording in the model's reasoning come from text rules, not a person's reading.

  Used

  • Alpamayo 2 Super
  • Pre-registered tests

  What each technology did here

  • Alpamayo 2 Super · NVIDIA

    Alpamayo 2 Super's paths on 20 samples (two navigation modes, six trajectories each), plus a mirrored-world control run.

    NVIDIA's open driving model: given camera frames, it proposes where the car should go next.

  • Pre-registered tests · MapMap

    The band, the out-of-band measure and the camera-heading sweep were fixed before scoring.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 24 Oct 2026

  Data: MapMap rig drives (twelve passes), OS Open Roads, Environment Agency LiDAR

• 
  LiveMobility · Smart spaces

  Where the Bikes End Up, Brighton

  What it is

  Brighton's hire bikes and e-scooters, collected every 2 minutes: where they are left outside bays, which bays overflow, and the morning van route that clears them.

  What it found

  At a typical refresh (the median, data from 21 to 26 Oct 2026), 50 of some 880 bikes and e-scooters are outside a bay, and 10 of 119 bays are over capacity. Anything that could point to someone's home is withheld: overnight stays on residential streets, side roads and lone spots on main roads.

  Why it matters

  A real UK fleet job on a real travel-time matrix, for councils that license hire bikes and e-scooters and the operators that rebalance them.

  Note: The route is solved by VROOM; NVIDIA cuOpt, run on the same saved instance, found the same plan, but one stop is too small to tell two solvers apart.

  Used

  • NVIDIA cuOpt
  • VROOM
  • MapMap travel-time matrix
  • Pre-registered tests

  What each technology did here

  • NVIDIA cuOpt · NVIDIA

    Run on the saved instance (same SHA-256) and the same MapMap matrix, on an NVIDIA A40: the same plan as VROOM, 22.5 minutes and 9.2 km, no rule broken. One stop leaves only one route, so it shows the run, not which solver is better.

    NVIDIA's GPU route optimiser for fleets and deliveries.

  • VROOM · Open source and open standards

    The morning route, solved through MapMap's hosted optimiser.

    An open-source route optimiser. MapMap's hosted optimiser runs it on MapMap's travel-time matrix.

  • MapMap travel-time matrix · MapMap

    Travel times between every bike and bay.

    MapMap's many-to-many travel times, the input every route optimiser needs.

  • Pre-registered tests · MapMap

    Definitions, tests and privacy withholding rules committed before any analysis.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 27 Oct 2026

  Data: Beryl Brighton GBFS feed (CDLA-Permissive-2.0), OpenStreetMap, NaPTAN (OGL v3.0)

• Generatednot a photograph
  LiveAutomotive and AV · Physical AI

  Clockwise: a UK roundabout drawn by NVIDIA's Cosmos world model

  What it is

  NVIDIA's Cosmos3-Nano-Transfer-Auto paints synchronised dashcam views of Lancing Manor Roundabout from MapMap's compiled scene, in rain at dusk and in clear day, and on a mirrored map as a check. Every frame is labelled GENERATED, and a count fixed before generation reports how often it put cars on the wrong side.

  What it found

  Two pre-registered passes, both ending with no verdict. Two Claude sessions rated the cars in sampled frames and agreed too poorly for a verdict; a third session settled the cars they disagreed on, which gives the count of cars on the wrong side. A MapMap person then checked the cars blind, without the raters' labels: all of pass 1's sample, and 18 of the 19 pass 2 frames with cars the count puts on the wrong side. Of the 20 such cars they checked, they confirmed none. What they did see were cars drawn on the grass and odd road markings, oddities of the model's world, not wrong-side driving.

  Why it matters

  A newly released NVIDIA world model run on a UK left-hand map in the camera layout it was trained on, with an honest count rather than a showreel, for AV and simulation teams that need UK synthetic footage and anyone evaluating world models.

  Note: MapMap placed the car boxes, so the count mostly measures whether the model drew cars inside them; the surroundings are the model's own invention, not Lancing Manor. The person's check covered pass 1's whole sample and, in pass 2, the 18 frames taken first: 63 of the 404 cars in its check pack. Every frame is generated, so no real people or vehicles appear. The page shows 25 generated clips: 18 from pass 1, including one drive from all seven cameras, and 7 from pass 2. Front views where the model drew a car maker's badge on the camera car's bonnet are cropped.

  Used

  • Cosmos3-Nano-Transfer-Auto
  • NVIDIA RDS-HQ
  • MapMap scene compiler

  What each technology did here

  • Cosmos3-Nano-Transfer-Auto · NVIDIA

    Run on rented NVIDIA H100 GPUs: 26 clips in pass 1 and 20 at 720p in pass 2, each drawn from the scene's road and car layout and a one-line description per camera.

    NVIDIA's world model that paints realistic multi-camera driving footage from a labelled scene.

  • NVIDIA RDS-HQ · NVIDIA

    The layout videos the model draws from are rendered from the pack's RDS-HQ scene with NVIDIA's own renderer.

    NVIDIA's driving scene format (roads, lanes, objects and camera poses) that its simulation and world-model tools read.

  • MapMap scene compiler · MapMap

    The roundabout scene, its modelled cars (eight in pass 1, sixteen in pass 2) and the mirrored map.

    MapMap's compiler from open map data to the scene files simulators load: OpenDRIVE, OpenUSD and RDS-HQ.

  Open the demoUpdated 29 Oct 2026

  Data: OpenStreetMap, OS Open Roads, Environment Agency LiDAR

• Rendered
  LiveInfrastructure · Physical AI · Road safety

  Surface Water on the GPU

  What it is

  The Surface Water Twin's solver, built for NVIDIA GPUs with Warp, run across 76 scenarios (recorded storms, design storms and ground-survey variations, each with and without drainage), then opened and path-traced in NVIDIA Omniverse.

  What it found

  All 76 scenarios finished, and the modelled water opens as an OpenUSD stage in Omniverse, now cut into a 43-second silent film. Our GPU build did not match our own CPU reference within the tolerance we set, so the page gives no speed figures.

  Why it matters

  A real storm on real UK terrain as a scenario set and a rendered scene, for highway drainage and asset teams, flood authorities and teams building physical AI on real ground.

  Note: The picture is rendered and the water depths are modelled; the lighting is illustrative.

  Used

  • NVIDIA Warp
  • NVIDIA Omniverse
  • OpenUSD
  • MapMap terrain pipeline

  What each technology did here

  • NVIDIA Warp · NVIDIA

    The solver's GPU build ran the whole scenario set on one rented NVIDIA RTX 6000 Ada.

    NVIDIA's Python framework for writing physics and simulation code that runs on a GPU, or on a CPU.

  • NVIDIA Omniverse · NVIDIA

    Omniverse Kit via Isaac Sim 6.1 opened the stage headless and path-traced the film.

    NVIDIA's platform for building and rendering 3D scenes. We open stages headless through Isaac Sim and path-trace them.

  • OpenUSD · Open source and open standards

    The terrain, road and water field exported as a USD stage.

    The open 3D scene format that Omniverse and many other 3D tools read.

  • MapMap terrain pipeline · MapMap

    The same Environment Agency ground as the Surface Water Twin.

    MapMap's pipeline that turns Environment Agency laser scans into road-level terrain.

  Open the demoUpdated 28 Oct 2026

  Data: Environment Agency LiDAR, Environment Agency rain gauges, OpenStreetMap

• 
  LiveMobility · Road safety

  Rain on your route, next 3 hours (San Jose)

  What it is

  NVIDIA's Earth-2 StormScope gives a chance of heavy rain every 10 minutes for three hours. We read it on each 3 km stretch of 12 MapMap routes out of San Jose, at the minute a car reaches it, with a leave-20-minutes-later comparison.

  What it found

  Pre-registered test met: across 624 forecasts on 13 rain days (January to March 2026), scored against radar, its chance of heavy rain beat radar persistence beyond an hour and GFS at every lead. Weak points on the page: small chances run low (9% forecast, 28% observed), and as a yes or no at 50% it flags only 20% of wet trips.

  Why it matters

  An open NVIDIA nowcasting model tied to real routes and scored in public, for fleet operators, transport authorities and anyone weighing an AI weather forecast for the road.

  Note: Advisory only, never a warning service. Radar reflectivity stands in for rain on the road, and it is one winter around one city.

  Used

  • NVIDIA Earth-2 StormScope
  • MapMap routing
  • Pre-registered tests

  What each technology did here

  • NVIDIA Earth-2 StormScope · NVIDIA

    StormScope-GOES-MRMS (Flash) ran 624 forecasts of 16 members on rented NVIDIA H100 GPUs, every half hour on the 13 qualifying days, scored against NOAA radar.

    NVIDIA's AI weather nowcasting model: from satellite and radar, it forecasts the next three hours of rain radar over the US every 10 minutes, as a set of 16 possible outcomes.

  • MapMap routing · MapMap

    The 12 routes, and the minute a car reaches each 3 km stretch.

    MapMap's routing engine, including truck routing that respects vehicle height, and live closures that redraw routes.

  • Pre-registered tests · MapMap

    The pass rule, the cases and the example-trip rule were committed before any forecast; the weak points are on the page.

    MapMap's method: the pass bar is written and hashed before the data is opened, and a failed test stays on the page.

  Open the demoUpdated 31 Oct 2026

  Data: NOAA MRMS radar, NOAA GOES-19 satellite, NOAA HRRR, NOAA GFS, OpenStreetMap