Choose a tool below to see what it does, how to use it, what it outputs, and how to interpret it responsibly.
Suggested Viewing Modes
Overview View focuses the output panel, core scenario inputs, and the shortest judge reading path.
Focus Mode hides advanced controls so the main workflow is easier to present. It does not change the model.
Core Inputs
Start with one road selection, then read the output panel, maths, and graphs as model outputs rather than official safety ratings.
Conditions:
+0 km/h×1.00
0.00%×1.00
Scenario & assumptions
Interpretation note: Defaults are evidence-guided multipliers. Adjust them to reflect local data or scenario testing. These controls expose the active assumptions rather than hiding them.
Assumptions
Applies to weather, lighting, and fatigue assumptions.
Shows how the output shifts when key assumptions vary within plausible ranges. This is a sensitivity check, not a measured confidence interval.
Weather settings
×1.20
350 m×1.70
×1.40
×3.00
×3.00
×1.10
Behavioural settings
×1.20
×4.00
Traffic proxy
0.50
0 = disable proxy, 1 = full rate ratio.
Lighting & surface
×1.40
×1.20
Segment Calibration
Applies to the currently selected road segment’s risk calculations.
Map Overlays
#2563EB
Default selection colours use percentile risk against the current sampled comparison context. Switch to traffic exposure or a custom accent when needed.
Hotspots
Overlay settings
Styles nearby road segments by percentile risk or traffic exposure.
500 m
85%
98%
Percentile thresholds apply only when road colours are set to percentile risk.
Select a road first to generate overlays.
Route (A→B)
Use the Route controls on the map to place Start (A) and End (B). The sidebar keeps profile, calculation, and route outputs together.
Distance: -Duration: -
Use the Route controls on the map to place Start (A) and End (B).
Route Hotspots
Isochrones
minmin
0.4
85%
98%
Travel-time bands keep their own colours; these thresholds only affect the road overlay when percentile risk colouring is active.
Generated Output
Awaiting input.
Show isochrone details
Graphs
Use Distribution Insights to place one selected road inside a wider sampled network.
Export
Export preserves the current model state, supporting calculations, and sampled context for review outside the app.
Primary comparison unit: annual. The daily view is shown for interpretive convenience inside the live app.
Read with the road details, maths, and percentile context. This is a prospective model output, not observed crash history.
Infrastructure rating details
Infrastructure rating reflects design attributes; it is not a crash prediction.
Save Case stores this model-output case in this browser only. It does not upload anything and will not appear on another device. To make it public, export the case evidence JSON, review it, and add it to the reviewed public Results dataset.
Save this model-output case locally?
This stores the selected road geometry, model outputs, scenario assumptions, OSM tags, missing-data flags, and data-confidence information in this browser only. It does not upload anything, collect personal details, or add the case to the reviewed public dataset.
Route Analysis
Profile: Driving
Distance: -
Duration: -
Average Risk: -
Highest Segment: -
Samples: -
Pick A and B to calculate a route.
Loading road geometry and context…0%
Road overlay colouring
Isochrones (Travel Time)
Export / Download
Segment rows with model metrics, supporting fields, and WKT geometry.
LineString features with full export schema properties.
Settings, thresholds, attribution, and a summary of the interpreted run state.
Opt-in case file for public review. Includes road geometry, OSM tags, scenario settings, model outputs, confidence fields, and available calculation context. It does not submit personal information or upload anything automatically.
Histogram bins, summary statistics, and selected-road context for comparative analysis.
Map view with legends and run metadata overlay.
PNG snapshot export is not supported in this browser. JSON exports are still available.
Ready.
Distribution Insights
n:-
Mean:-
Standard Deviation:-
Selected X:-
Z-Score:-
Percentile:-
P95:-
P99:-
CVaR95 (Tail Mean ≥ P95):-
Minimum:-
Q1 (25th Percentile):-
Median (Q2):-
Q3 (75th Percentile):-
Maximum:-
IQR:-
Lower Whisker:-
Upper Whisker:-
Outliers:-
Selected percentile:Select a road segment to compare its percentile within the sampled network.
0%50%100%
Analytical View
Distribution Overview
Select a graph type to inspect how sampled road-risk values are distributed and where the current road sits.
Distribution summary will appear here when sampled graph data is available.
Maths & Method
Select a road segment to inspect how the current model output is built.
Model Inputs & Analysis
Select a road to inspect geometry, assumptions, and derived outputs.