05-19-16 Regular Meeting of the Planning and Zoning Commission

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EXHIBIT C Both of these driveways should be designed with increased radii to accommodate the largest vehicles anticipated to make trips to and from the site (likely a WB-62 or WB-67), but site engineers should check to ensure adequate geometry is being provided for truck turning movements. There is some offset alignment at the north driveway, but with existing turning movements very low at the existing Vapor Point, LLC driveway, and low turning movements projected for the new distribution center drive. B. Off-Site Improvements The analysis indicates that no off-site improvements will be necessary to accommodate site generated traffic at the existing intersections included in the study area. Critical movements at the Fairmont at S. 16 Street intersection were found to th be minimally impacted by development traffic by examination of level of service and queue simulation output. Warrants for both left turn lanes and right turn lanes were examined for the site driveways on South 16 Street. In lieu of local guidelines for right turn lanes, the site th driveway on South 16 th guideline from the TxDOT Access Management Manual (60 vehicles per hour for roadways less than 45 mph). The peak hour volumes projected for the driveways on South 16 Street include about 10-15 right turns in the AM & PM peak hours, well th under the 60 turns per hour guideline. According to this often used guideline, no right turn deceleration lane would be required for the new development at either driveway. For left turns, the warrants used included techniques specified in the National Cooperative Highway Re Evaluating Intersection Improvements: An Engineering Study Guide. These guidelines are very similar to the AASHTO guidelines referenced in the TxDOT Access Management Manual. Regarding the left turn lane warrants, the NCHRP 457 figures for a two-lane roadway indicated that a left turn will not be required for either driveway. C. Other recommendations According to PICM, Section 6, construction of a sidewalk along the site frontage would be required unless waived by city staff, which should be considered given the open-ditch cross section of South 16 Street. th Disclaimer: This report has been prepared to assist in assessing the impacts of traffic generated by the subject development and is intended to provide an overview of relevant issues and represents the best estimates and opinion of Voigt Associates, Inc. While traffic forecasts cannot be precise forecasts, they do represent, in our view, a reasonable expectation for the future based on the information available to us as of the date of this report. The estimates contained within this document rely on engineering assumptions and judgments and may be influenced by external circumstances that are subject to changes that may materially affect the conclusions drawn. ©2016 Voigt Associates, Inc. This report and all material herein are protected by United States copyright law and may not be reproduced, distributed, transmitted, displayed, published or broadcast in whole or in part by any public or private entity without the prior express written permission of Voigt Associates, Inc. ES-2 Voigt Associates, Inc. Project 30605 GCP 16 Street Traffic Impact Analysis th March 2016 Prepared for Generational Commercial