Arc for left and right turns: R = 550 m


An arc with a horizontal radius of 550 m provides a speed of 100 km/h.

ITL Interchange Stack Interchange Turbine Pinavia Cloverleaf(*1)
Characteristics of interchange
Arc through (m) 550 0 0 550 0
Arc turn right (m) 550 550 550 550 550
Arc turn left (m) 550 550 550 550 225
Area of interchange (ha) (*2) 142 79 260 142 142
Number of levels 2 4 2 2 2
Road distance
Road distance straight (m) 2675 2400 2400 2785 2400
Road distance right (m) 720 860 2370 1505 1500
Road distance left (m) 880 2000 2445 2265 1050
Road distance total (m) 17100 21040 28860 26220 19800
Overpasses distance
Overpasses distance straight (m) 1220 /  200(*3) 100 100 6600 100
Overpasses distance right (m) 0 0 0 0 0
Overpasses distance left (m) 1760 8000 8620 10200 0
Overpasses distance total (m) 2980 /  1960(*3) 8100 8720 16800 100


*1      The cloverleaf in traffic characteristics is not comparable with the other interchanges.
          The calculation is added as the simplest version of the interchange

*2      The outer edge of the road is taken into account

*3      The road straight on the upper level can also be carried out mostly after the embankments instead of the overpasses.
          In this case, we have overpasses in the length of 200m and the embankments in the length of 420m.