Research Article
Theoretical Research on Longitudinal Profile Design of Superhighways
Table 13
The minimum radius and length of a convex vertical curve of a superhighway.
| Design speed (km/h) | Stopping sight distance ST (m) | Impact mitigation | Lighting distance | Adopted value | Recommended value | Ultimate minimum radius (m) | General minimum radius (m) | Minimum length of the vertical curve (m) |
| 180 | 360 | 9000ω | 32400ω | 32000ω | 20000 | 31000 | 145 | 160 | 310 | 7111ω | 24025ω | 24000ω | 17000 | 26000 | 130 | 140 | 260 | 5444ω | 16900ω | 17000ω | 14000 | 21000 | 115 | 120 | 210 | 4000ω | 11025ω | 11000ω | 11000 | 17000 | 100 | 100 | 160 | 2778ω | 6400ω | 6000ω | 6500 | 10000 | 85 |
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