Research Article
Road Assessment Model and Pilot Application in China
Table 4
Key data and road attributes.
| | Attribute | Category | Class | | 1 | 2a | 2 | 3 | Urban |
| | Length (km) | | 55.1 | 20.4 | 235.4 | 49.6 | 13.6 |
| | AADT | | 11305 | 9606 | 8013 | 3855 | 4006 |
| | Motorcycle flow (% of AADT) | 21%–40% | 0% | 0% | 0% | 100% | 0% | | 11%–20% | 87% | 40% | 52% | 0% | 0% | | 6%–10% | 13% | 60% | 36% | 0% | 0% | | 1%–5% | 0% | 0% | 13% | 0% | 100% |
| | Bicycle flow | Low | 100% | 100% | 100% | 100% | 100% |
| | Pedestrian flow (along) | High | 0% | 0% | 7% | 2% | 0% | | Medium | 48% | 19% | 43% | 24% | 63% | | Low | 49% | 77% | 46% | 74% | 37% | | None | 3% | 4% | 3% | 0% | 1% |
| | Delineation | Poor | 96% | 69% | 60% | 59% | 84% | | Adequate | 4% | 31% | 40% | 41% | 16% |
| | Intersection quality | Poor | 53% | 66% | 78% | 95% | 67% | | Good | 47% | 34% | 22% | 5% | 33% |
| | Lane width | Medium | 13% | 47% | 15% | 0% | 0% | | Wide | 87% | 53% | 85% | 100% | 100% |
| | Curvature | Sharp curve | 0% | 0% | 1% | 4% | 0% | | Moderate curvature | 5% | 2% | 14% | 20% | 6% | | Straight or gently curving | 95% | 98% | 86% | 76% | 94% |
| | Overtaking demand | High | 0% | 0% | 83% | 0% | 0% | | Medium | 0% | 0% | 0% | 99% | 0% | | Low | 0% | 100% | 14% | 1% | 84% | | None | 100% | 0% | 3% | 0% | 16% |
| | Side friction | High | 0% | 0% | 0% | 1% | 1% | | Medium | 2% | 3% | 2% | 0% | 1% | | Low | 98% | 97% | 98% | 99% | 99% |
| | Pavement condition | Poor | 0% | 0% | 0% | 53% | 0% | | Medium | 4% | 1% | 5% | 29% | 0% | | Good | 96% | 99% | 95% | 18% | 100% |
| | Roadside severity (right) | Cliff | 0% | 0% | 1% | 0% | 0% | | Motorcyclist friendly barrier | 1% | 0% | 0% | 0% | 1% | | Distance to object >10 m | 0% | 0% | 1% | 0% | 0% | | Distance to object 5–10 m | 0% | 0% | 0% | 0% | 29% | | Distance to object 0–5 m | 57% | 74% | 73% | 20% | 53% | | Steep fill embankment slopes | 0% | 0% | 4% | 17% | 0% | | Deep drainage ditches | 38% | 24% | 18% | 60% | 7% | | Cut | 2% | 0% | 1% | 2% | 8% | | Safety barrier | 1% | 2% | 3% | 1% | 1% |
| | Pedestrian crossing quality | Poor | 62% | 39% | 39% | 100% | 36% | | Adequate | 38% | 61% | 61% | 0% | 64% |
| | Speed | 80 km/h | 60% | 44% | 29% | 0% | 0% | | 70 km/h | 3% | 53% | 32% | 98% | 90% | | 60 km/h | 37% | 2% | 40% | 2% | 10% |
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