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                Improving Safety and Mobility through a Road Diet in Richardson, Texas
    

    
    
          ****Local & Pedestrian and Bicycle Safety** | June 2022**

*“This project has been a successful collaboration integrating land use and transportation. The transformation of Greenville Avenue provides a safe connection between Richardson’s urban villages for people walking or biking. The City’s commitment to mobility through walking, biking, and transit support the success of the IQ as business and development thrives in the district. Richardson’s Transportation & Mobility Department is very proud of this accomplishment and partnership among departments and agencies. We celebrate the project’s success so far and look forward to making it even better.”*
- Mark Nelson, Director of Transportation & Mobility, City of Richardson, Texas

CHALLENGE

The Richardson (Texas) Innovation Quarter, also known as simply “Richardson IQ,” is a 1,200-acre urban hub with a rich heritage of innovation and entrepreneurship located in heart of the booming Dallas-Fort Worth Metroplex. In 2018, the Richardson IQ Vision Study identified a series of strategies to redesign key streets for better safety and mobility.1 The study evaluated street capacity versus usage to help identify where opportunities for safety and mobility improvements existed. Where volumes are far lower than available capacity, there is space in the right-of-way to incorporate pedestrian and bicycle infrastructure and meet other transportation needs. Located in the Richardson IQ, Greenville Avenue was designed to have a capacity of 45,000 vehicles per day. Today, it has a usage between 11,000 (north of the DART Arapaho Center Station) and 13,000 (south of Arapaho Road) vehicles per day. Dating back to 1987, the highest average count of vehicles per day on Greenville Avenue occurred in 1988 with 18,734. With roughly three times the capacity it needs, Greenville Avenue was identified for potential bicycle and pedestrian safety and mobility improvements.2

people attending the Richardson, TX Community Engagement Event

Figure 1. Richardson, TX Community Engagement Event. Source: City of RichardsonGreenville Avenue before the Demonstration Project Improvements

Greenville Avenue after the Demonstration Project Improvements

Figure 2. Greenville Avenue Before (top) and Demonstration Project Improvements (bottom)
Source: City of Richardson

ACTION

The City of Richardson began conducting a traffic study on Greenville Avenue in May 2019 to inform potential improvements. The study concluded that a road diet—or roadway reconfiguration that typically converts an existing four-lane undivided roadway to a three-lane roadway to improve safety, calm traffic, provide better mobility and access for all road users, and enhance overall quality of life—should be considered for Greenville Avenue. The study found that one lane could be removed from northbound and southbound Greenville Avenue and still operate within acceptable conditions while still leaving adequate capacity for potential increases in vehicular traffic along the corridor in the future.3 As part of the study, the City of Richardson conducted a survey of citizens and employees in the IQ and received strong support for redesigning Greenville Avenue to accommodate all modes of transportation, which would benefit the proposed redevelopment of existing surface parking at a transit station along the corridor as a mixed-use transit-oriented development (TOD). Additionally, as part of the study, the City of Richardson installed pedestrian and bicycle infrastructure as a temporary demonstration project to test the effectiveness of the improvements and collect data to better inform the decision-making process for staff and elected officials before installing improvements permanently. Through a community engagement event (See Figure 1) to reveal the project, citizens expressed a desire for separated bike lanes (a proven safety countermeasure), use of green paint for transition zones, and vertical barriers as a buffer for the bike lanes.

See Figure 2 for a comparison of Greenville Avenue before and after the City installed temporary demonstration project improvements. In May 2020, the City completed the safety and mobility improvements. In September 2020, the City received Federal funding to reconstruct the intersection of Greenville Avenue and Arapaho Road to improve pedestrian and bicycle safety. Construction is anticipated to begin in 2023.

RESULT

The Greenville Avenue road diet project will result in the removal of excess vehicle lanes and reallocating that space for bicycle lanes, and improved pedestrian infrastructure, including an at-grade pedestrian crossing, that serve to better integrate the light-rail station with the Innovation Quarter. The Richardson IQ Vision Study—supported by its zoning and form-based code—will help promote future development that encourages walking, cycling, and transit as the primary modes of transportation in the corridor. The City’s public engagement efforts played a key role in the planning process and in the ultimate success of this project. These improvements will help the City achieve its vision for a corridor that is safe for all users and will support TOD and other compatible development plans.

RESOURCES

**Greenville Avenue Mobility Improvements**

**Road Diets (Roadway Reconfiguration) Proven Safety Countermeasure**

**Bicycle Lane Proven Safety Countermeasure**

1Richardson Innovation Quarter, https://richardsoniq.com/

2Greenville Avenue Mobility Improvements, Richardson, Texas, https://www.cor.net/departments/development-services/comprehensive-planning/enhancement-redevelopment/collins-arapaho-transit-oriented-development-and-innovation-district/placemaking-activities-and-demonstrations-copy

3Greenville Avenue Demonstration Project, Richardson, Texas, November 2019, https://www.cor.net/home/showpublisheddocument/27471/637096883376900000
              
      
    
          Last updated: Tuesday, September 6, 2022 U.S. DEPARTMENT OF TRANSPORTATION

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