Research Article
Theoretical Research on Longitudinal Profile Design of Superhighways
Table 12
The minimum radius and length of a convex vertical curve of an ordinary highway.
| Design speed (km/h) | Stopping sight distance ST (m) | Impact mitigation | Lighting distance | Adopted value | Value specified in the standard | Ultimate minimum radius (m) | General minimum radius (m) | Minimum length of the vertical curve (m) |
| 120 | 210 | 4000ω | 11025ω | 11000ω | 11000 | 17000 | 100 | 100 | 160 | 2778ω | 6400ω | 6500ω | 6500 | 10000 | 85 | 80 | 110 | 1778ω | 3025ω | 3000ω | 3000 | 4500 | 70 | 60 | 75 | 1000ω | 1406ω | 1400ω | 1400 | 2000 | 50 | 40 | 40 | 444ω | 400ω | 450ω | 450 | 700 | 35 | 30 | 30 | 250ω | 225ω | 250ω | 250 | 400 | 25 | 20 | 20 | 111ω | 100ω | 100ω | 100 | 200 | 20 |
|
|