Superelevation at ramp terminals should be developed using the following guidelines. The
rate of superelevation at the entrance and exit nose should be selected on the basis of the
design speed of the ramp at the nose. All transverse changes or breaks in superelevation
should be made at joint lines in concrete pavement. In the case of bituminous pavement,
the superelevation breaks should occur in the same locations as they would in concrete pavement. For high-speed terminals, the transverse breaks in superelevation cross slope
should not exceed a differential of 0.032 ft/ft (0.032 m/m) at the mainline pavement edge
or 0.050 ft/ft (0.050 m/m) at other locations. When a double break occurs on longitudinal
joints less than 6 ft (1.83 m) apart, it should not exceed a total differential of 0.032 ft/ft
(0.032 m/m), if adjacent to the mainline, or 0.050 ft/ft (0.050 m/m) elsewhere. On lowspeed
terminals, the transverse breaks in superelevation cross slope should not exceed a
differential of 0.05 to 0.06 ft/ft (0.05 to 0.06 m/m). For high-speed terminals, the rate of
rotation of a superelevated ramp pavement or speed change lane pavement should be in
accordance with rates from Table 2.13. Where possible, the terminal area pavement and
shoulder should slope away from the mainline pavement so that a minimum amount of
water drains across the mainline pavement.