M4 East Tunnel

NSWMotorwayConcrete0.38 km3 lanes#111237901

4.8RQS

2°/kmCurviness

22.0 m/kmElevation change

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Vehicle scores

4.8/10

SPTSportsSealed roads, curviness, open mountain passes

4.4/10

MOTMotoTight bends, switchbacks, technical mountain roads

5.3/10

EVEVSmooth surface, sealed roads, range-friendly routing

3.6/10

4WD4WDGravel tracks, off-road access, recovery risk ratings

5.5/10

VANCaravanSmooth sealed roads, gentle grades, no steep passes

How the score is built

Algorithm factors

SurfaceConcrete

9.0

Smooth sealed asphalt scores 10. Chipseal 8. Gravel 5. Dirt 2.

Curviness2°/km

0.8

Long straights with few corners

Speed90 km/h

10.0

Sweet spot is 60–110 km/h. Below 40 is suburban crawl. Above 110 is freeway.

Road classMotorway

0.0

Motorways score zero. Tertiary roads score 9.

TrafficMotorway

1.0

Expect other vehicles at peak times

Elevation22.0 m/km

7.0

Sustained climbing and big descents

Safety score

9.9/10 — higher is safer

Composite of wet, night, spot risk, fauna, flood, glare and wind factors.

Road intel

Crash history

10 years of recorded crash data

Low risk

Total crashes

Fatalities

Serious injuries

6.0 crashes/km

Source: State crash data linked to road geometry. Data covers 10 years of recorded incidents. Crash breakdown (night, wet, weekends): VIC data 2012-2024.

Community

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Nearby segments

Higher-scoring segments on the same road

API reference

This data is available via the Contour API

GET/api/segments/111237901?type=roadPublic — scores, geometry, community data

GET/api/v1/segments/111237901?type=roadAuthenticated — full data including crash block

GET/api/segments/nearby?lat=-33.870&lng=151.106&radius_m=5000Find segments near a coordinate

Segment ID: 111237901 · State: NSW · Sources: OpenStreetMap, TAC CrashStats, SILO, BOM, Global Wind Atlas, Copernicus

Councils & Government

This road is part of NSW's road network. Contour scores every road in Australia for surface condition, curviness, grey spot classification, and 4WD track passability. If your organisation manages this road or promotes tourism in the region, this data is available via API.

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Contour road scores are based on road geometry, surface quality, and traffic data. They are a guide only. Always drive to conditions, follow local road rules, and exercise your own judgement. Do not use Contour while driving.