Research Article
Engineering Solutions to Enhance Traffic Safety Performance on Two-Lane Highways
Table 2
Geometric features of G109, Beijing.
| Design indexes | Units | Class 2 | Class 3 |
| Lane | — | 2 | 2 | Section | — |
Origin to K28 + 560 | K28 + 560 to destination | Design speed | km/h | 60 | 30 | Paving width | m | 12.0 | 8.5 | Shoulder width | m | 0.5 | 0.5 | Length | km | 119.15 | The minimum horizontal curve radius | m | 10 (<60 m, 209 segments) | The maximum longitudinal gradient | % | 9.49 (>5%, 87 segments) |
|
|