Item 27 - Appeal Application Nos. 2020-03 and 2020-04 - Central Pointe Mixed-Use Development

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10.3 Internal Circulation Evaluation Access to the site is proposed via a right -turn in/out driveway along 4th Street. Access for small service/delivery trucks (i.e. UPS, FedEx, and trash trucks) and passenger vehicles for the Project site have been evaluated. Our evaluation of the on -site circulation shown on the Project site plan was performed using the Turning Vehicle Templates, developed by Jack E. Leisch & Associates and AutoTURN for AutoCAD computer software that simulates turning maneuvers for various types of vehicles. Figure 10-1 illustrates the turning movements required of a small delivery truck (SU-30) as it accesses the site from 4th Street. Review of Figure 10-1 shows overall the turning movements are considered adequate. After reviewing the design of Project Driveway 2 along 4th Street, it has been determined that the driveway throating is considered adequate. 10.4 Sight Distance Evaluation At intersections and/or project driveways, a substantially clear line of sight should be maintained between the driver of a vehicle waiting at the crossroad and the driver of an approaching vehicle. Adequate time must be provided for the waiting vehicle to either cross all lanes of through traffic, cross the near lanes and turn left, or turn right, without requiring through traffic to radically alter their speed. A sight distance evaluation has been performed for both project driveways. The Sight Distance Evaluation prepared for the project driveways are based on the criteria and procedures set forth by the California Department of Transportation (Caltrans) in the State's Highway Design Manual (HDM). Corner sight distance was utilized for the evaluation. Corner sight distance is defined in the Caltrans HDM to be the distance required by the driver of a vehicle, traveling at a given speed, to maneuver their vehicle and avoid an object without radically altering their speed. Line of sight for corner sight distance is to be determined from a 3'/2 foot height at the location of the driver of a vehicle on a minor road to a 41/4 foot object height in the center of the approaching lane of the major road. Based on the criteria set forth in Table 405.1A of the Caltrans HDM and a posted speed limit of 25 mph on Park Court Place, a corner sight distance of 275 feet is required for left -turn at Project Driveway 1 and 239 feet for right -turn at Project Driveway 1. Based on the criteria set forth in Table 405.1A of the Caltrans HDM and a posted speed limit of 40 mph on 4th Street, a corner sight distance of 382 feet is required for right -turn at Project Driveway 2. Figure 10-2 presents the results of the sight distance evaluation for the Project driveways based on the application of the corner sight distance criteria. The figure illustrates the limited use areas. As shown, the sight lines at the proposed Project driveways are expected to be adequate as long as obstructions within the sight triangles are minimized.