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Model Inventory of Roadway Elements – MIRE, Version 1.0

189. Ramp Deceleration Lane Length

Definition: Length of deceleration lane, not including taper. For tapered ramps, this would be measured from the point where the ramp lane width becomes 12 feet to the point of curvature of the initial ramp curve. For parallel ramps, this would be measured from end of taper to nose of painted gore.

Attributes: Feet

See Figure 21 for additional detail.

Priority: Critical

HPMS/Tool Requirements: None

Illustration shows two types of Deceleration Lanes: Tapered Design; and Parallel Design

Figure 21. Illustration of Deceleration Lane Length for Tapered and Parallel Designs.

Page last modified on October 15, 2014.
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