Every threshold, classification, and export format references a specific standard. Nothing is ad-hoc.
Visual assessment. 30+ distress types for flexible pavements and unpaved roads. Degree and extent rating scales.
IRI from accelerometer. Golden Car quarter-car model. Condition classes: Very Good <2.5, Good <4.0, Fair <6.0, Poor.
Combined Instrument Data exchange format. The regulatory standard for submitting profiler data to COTO.
IRI condition bands by road category A-D. Sound/Warning/Severe thresholds with confidence percentiles (50th-95th).
MPD macrotexture bands. ETD conversion (0.8 x MPD + 0.2). Very Poor / Poor / Adequate / Rough classification.
Visual condition assessment forms. Flexible pavement and unpaved road variants. Used by VisualAssessor apps.
FWD Deflection Bowl Parameter benchmarks. D0, BLI, MLI, LLI thresholds per pavement family: granular, cementitious, bituminous.
Rut depth condition bands. Sound <10 mm, Warning 10-20 mm, Severe >20 mm. Uniform thresholds across all road categories A-D.
Skid friction coefficient lower limits by road feature. 0.35 for dual carriageways up to 0.55 for signal approaches and steep gradients.
In-depth explainers — definitions, thresholds and how RoadSense computes each metric.
IRI condition classes, the Golden Car model, and ASTM E1926 calculation.
The §19 CID exchange format for submitting profiler surveys to COTO.
IRI bands by road category A–D and the rut-depth Sound/Warning/Severe thresholds.
MPD→ETD conversion and SFC skid-resistance limits by road feature.
Deflection bowl parameters D0, BLI, MLI and LLI and their benchmark bands.
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