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Northside Drive Reversible Lane Traffic Analysis

Introduction

Reversible lanes are a commonly implemented traffic control strategy. Used throughout the US, reversible lanes control traffic on congested arterials and bridges by allocating roadway lanes to one direction or another by time of day. This strategy is particularly effective when traffic volumes are directional in nature and right-of-way is limited. However, along with its ability to address traffic congestion issues and make efficient use of available right-of-way, reversible lanes are perceived as creating driver confusion and being less safe than other fully designated cross-sections.

In response to requests from the City of Atlanta, the Georgia Department of Transportation (GDOT) contracted with Day Wilburn Associates, Inc. (DWA) to perform a traffic and safety analysis of the reversible lane system existing along Northside Drive from I-75 to Arden Way. This analysis examines the existing reversible lane operations, as well as alternative cross-sections for use without reversible lanes.

Northside Drive Reversible Lane Traffic Analysis Study (download)

Study Area

The study area investigated in this analysis includes Northside Drive from I-75 to north of Arden Way as shown in Figure 1. As this figure shows, the study area extends approximately 2.25 miles and includes six signalized intersections. Land use along the corridor is primarily residential, with many homes maintaining driveways onto Northside Drive and many residential collector streets accessing Northside Drive. Institutional (North Atlanta High School) and parks are the other land uses along this urban corridor.

Study Purpose

The purpose of the traffic and safety analysis was to examine the overall safety and operation along the corridor and determine the impact on safety and corridor level of service (LOS) resulting from the potential removal of the reversible lanes. Specific alternatives were identified for use of the roadway cross-section with removal of reversible lanes and these were compared to traffic operations and safety conditions with the reversible lanes in place.

Additional Information

Please contact , Traffic Design Manager at 404-635-8134 for additional information on this study.

Return to Traffic Safety & Design

Updated September 15, 2003. 08:52

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© 2003 Georgia Department of Transportation

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