| Vertical curve type | Ramp design speed (km/hour) | ||||||||||
| 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | ||||
| Crest vertical curve radii(2) | |||||||||||
| One lane or two lane directional ramp (object height = 0.15 m) | 1610 | 3040 | 4570 | 6420 | 9055 | 12,140 | 16,310 | 21,100 | |||
| Sag vertical curve radii(3) | |||||||||||
| One lane or two lane directional ramp | 230 | 410 | 645 | 930 | 1260 | 1650 | 2085 | 2575 | |||