Selecting Ramp Design Speeds, Volume 2: Conduct of Research Report
Designing
extended sections of highway based on the design speed process is relatively straightforward.
However, when applied to interchange ramps where high-speed facilities meet low-speed
facilities and drivers are expected to accelerate or decelerate over short distances, application of
the design speed process is more complex.
The TRB National Cooperative Highway Research Program's
NCHRP Web-Only Document 313: Selecting Ramp Design Speeds, Volume 2: Conduct of Research Report
provides enhanced design guidelines for selecting
appropriate ramp design speeds in a consistent manner, accounting for sequential speed transitions from one
component or section to the next, consistent with performance capabilities of vehicles and driver
expectations.
Supplemental to the document are
NCHRP Web-Only Document 313: Selecting Ramp Design Speeds, Volume 1: Guide and Ramp Speed Profile Model
figures.
This Summary Last Modified On: 11/23/2021