Annexure BDry retroreflectivity#
B1 Unless specified otherwise in Annexure MRTS45.1 documents:
- a) the frequency of dry retroreflectivity testing must not be less than the frequency in Table B1(a), and
- b) the average dry retroreflectivity per Lot (when measured in accordance with Austroads Test Method AGPT-T800) must not be less than the value in Table B1(b).
Table B1(a) – Minimum frequency of testing for dry retroreflectivity
| Length of road (km) | Minimum number of test sites |
|---|---|
| ≤ 5 | 2 |
| 6-20 | 4 |
| 21-30 | 6 |
| 31-50 | 10 |
| 51-100 | 20 |
| > 100 | Every 10 km |
Table B1(b) – Dry retroreflectivity
| Test | Timing of Test (Days of wear after opening to traffic) | Average Dry Retroreflectivity (1) (mcd/lx/m²) | White longitudinal pavement markings | Yellow pavement marking |
|---|---|---|---|---|
| Initial Test | Within the first 30 days | ≥ 400 | ≥ 200 | |
| Second Test(2) | Between 365 and 395 days | ≥ 250 | ≥ 150 | |
| Intervention Level(2) | At least once every 12 months | < 150 | < 100 |
B2 If the pavement comprises of concrete or light coloured aggregate spray seal, the retroreflectivity of markings must exceed that of the pavement surface by a minimum of 150 mcd/m²/lx.