Downer Road

SATertiary road0.6 km6 segments

6.0Sports

0.6 kmTotal length

6Segments

6Grey spot segments

Downer Road is a 1 km sealed tertiary route in South Australia, Australia. It scores 7.3/10 for caravans with straight corners and excellent surface.

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Vehicle scores

6.0/10

SPTSportsSealed roads, curviness, mountain passes

5.8/10

MOTMotoTight bends, switchbacks, technical roads

6.4/10

EVEVSmooth surface, sealed roads, range-friendly

4.6/10

4WD4WDGravel access, off-road suitability

7.3/10

VANCaravanSmooth sealed, gentle grades, no steep passes

Segment quality distribution

Sports score - 6 segments

Good (6-8)50%Fair (4-6)50%

Sports score IQR: 5.9 - 6.5

Surface

Surface coverage

Sealed100%

Score breakdown

Median component scores across all segments

Surface

10.0

Median surface quality. Smooth sealed asphalt scores 10. Chipseal 8. Gravel 5.

Curviness

1.0

Median curviness. Higher scores mean more bends per kilometre.

Speed

7.0

Speed limit suitability. Sweet spot is 60-110 km/h.

Road classTertiary road

9.0

Road classification. Motorways score zero. Tertiary roads score 9.

Traffic

9.0

Estimated traffic density. Lower traffic = higher score.

Elevation

5.5

Elevation change per kilometre. More climbing = higher score.

Crash history

Aggregated across all 6 segments

Grey spots

Crash record linkage not yet available for SA. Grey spots are segments where curvature geometry mismatches the posted speed limit - these are flagged regardless of crash history.

Traffic volume

Annual average daily traffic

9,000vehicles per day (median)

Coverage: 33% of segments have AADT data. Based on traffic count surveys - actual volumes vary by season.

Road environment

Geometry and climate-derived risk indicators

7.0/10 safety score - higher is safer

Wet road exposure40%

Night driving risk61%

Wind exposure48%

Sun glare risk99%

Wildlife strike risk11%

Risk values derived from road geometry, orientation, weather station data, and satellite canopy cover. 0 = minimal risk, 1 = maximum risk.

Segments

Top 7 segments by sports score

IDSurfaceLengthSportsMotoEV

#103963181Paved0.15 km7.77.67.9 #103963179Paved0.11 km6.76.47.0 #103963183Paved0.18 km6.15.86.3 #103963182Paved0.03 km6.05.76.3 #103963180Paved0.11 km5.95.66.2 #103963184Paved0.06 km5.95.66.4 #104536448Asphalt0.30 km4.97.58.1

API reference

Road aggregate data via the Contour API

GET/api/v1/roads/downer-road-saRoad aggregate - scores, stats, risk profile, activity, segment list

GET/api/v1/roads/search?q=Downer%20Road&state=SASearch roads by name

Councils & Government

This road is part of SA'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.

Enquire about council data access →

Frequently asked questions

How long is Downer Road?+

Downer Road is approximately 1 km long. At typical touring speeds, expect around 1 hour of driving end to end, excluding stops.

Is Downer Road sealed?+

Yes. Downer Road is fully sealed for its entire length.

Is Downer Road good for motorcycles?+

It is passable. Downer Road scores 5.8/10 for motorcycles. Consider it a connector rather than a destination ride.

Can I drive Downer Road in a caravan?+

Yes. Downer Road scores 7.3/10 for caravans, making it a reasonable choice for towing. Watch for changes in surface and any steep gradients.

Is Downer Road good for an EV?+

Yes. Downer Road scores 6.4/10 for EVs. Regenerative braking on any elevation changes and smooth throttle control on the corners will both feel at home here.

Are there any dangerous sections on Downer Road?+

Contour has identified 6 grey spots on Downer Road - sections where the road geometry does not match the posted speed limit. Take extra care in wet or low-visibility conditions.

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Road data last updated: 23 April 2026. Scores are based on road geometry, surface, and traffic data. Always drive to conditions and follow local road rules.

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