A. A traffic study shall be required and shall include:
1. Levels of service for existing conditions.
2. Level of service for post-construction conditions.
3. Calculations conducted according to the "Highway Capacity Manual".
4. Recommendations as to additional/limited access, additional lanes, signalization, etc.
B. The need or requirement for a traffic impact study shall be determined during the concept or preliminary planning stage of the proposed development. The developer/subdivider shall meet with Village of Sugar Grove officials during one of these stages for the purpose of determining the traffic study requirements. When the Village of Sugar Grove requires that a traffic study be prepared based upon the above, the study shall include, but not be limited to addressing the following issues:
1. Introduction: A general description of the proposed development including its size, location, the political jurisdiction in which the site is located, the boundary limits of the study area, and any other information needed to aid in the review of the development's traffic impacts.
2. Project Description: A description of the existing and proposed land uses of the development. (If alternative land uses are being proposed, the highest trip generation uses shall be assigned for each land use.)
3. Site Accessibility: A clear and concise description of the proposed ingress/egress points to the proposed development including a sight distance analysis.
4. Existing External Roadway Network: A description of the existing external roadway network in the vicinity of the proposed development to include functional classification, primary traffic control devices, signalized intersections, roadway configurations, geometric features (curves and grades), lane usage, parking regulations, street lighting, driveways serving sites across from or adjacent to the site, and right-of-way data. (The area of influence shall be determined by the traffic generated from the site, the trip distribution of traffic, and the trip assignment of the traffic generated by the development over the surrounding area road network.)
5. Existing A.M., P.M. And Total Daily Traffic Volumes: Existing A.M., P.M. and total daily traffic volumes for access driveways (if existing), intersections and the roadway network in the site vicinity shall be determined and displayed on a graphic(s) in the final report. To determine A.M. and P.M. existing traffic volumes, machine counts and/or manual counts shall be conducted during a three (3) hour period of the morning between approximately six o'clock (6:00) A.M. to nine o'clock (9:00) A.M. of an average or typical weekday, and between approximately three o'clock (3:00) P.M. to six o'clock (6:00) P.M. on an average or typical weekday. Peak hour counts may be required on Saturday and/or Sunday depending on the proposed land use. All A.M. and P.M. peak hour counts shall be recorded and summarized in fifteen (15) minute increments and included in the appendix of the final report. Manual counts shall include vehicle classifications, i.e., passenger cars, single-unit, multi-unit trucks and buses. Traffic counts shall show both entering and exiting traffic at the proposed access points (if existing) in addition to turning and through traffic movements at critical intersections.
6. Trip Generation Rates And Volumes: Trip generation rates and volumes for each type of proposed land use shall be determined for the A.M. and P.M. peak hours, and total daily volumes may be required on Saturday and/or Sunday depending on the proposed land use. The trip generation rates shall be calculated from the latest data available contained in the Institute of Transportation Engineer's "Trip Generation Manual". If trip generation rates for a specific land use are not available from the "Trip Generation Manual", the Village of Sugar Grove shall approve the substitute rates.
7. Site Generated Trip Distribution And Assignment: The most logically traveled routes in the vicinity of the development shall be used for trip distribution and assignment purposes. The directional distribution of site-generated traffic approaching and departing the development should be shown in both graphic and tabular form. All assumptions used in the determination of distribution and assignment shall be clearly stated.
8. Existing Plus Site Generated Traffic Volumes: Existing plus site generated traffic volumes for the A.M., P.M. peak hours and total daily traffic for access drives, intersections and the roadway network in the site vicinity shall be determined and displayed on a graphic(s) in the final report. Traffic volumes shall show both entering and exiting traffic at the proposed access points in addition to turning and through traffic movements at critical intersections.
9. Future Traffic (Existing Plus Site Generated) Volumes: Future traffic (existing plus site generated traffic volumes) for the A.M. and P.M. peak hours, and the total daily traffic for access drives, intersections and roadway network in the site vicinity shall be determined and displayed on a graphic(s) in the final report. Projected increases in the external (non-site related) roadway traffic must also be determined. The selection of a horizon year for which traffic operation conditions are to be characterized may be considered as the date full buildout and occupancy is achieved. If the project is a large multi-phased development in which several stages of development activity are planned, a number of horizon years may be required that correspond to the bringing on line of major development phases. Horizon dates should be timed to coincide with major stages of the overall project or to coincide with increments of area transportation system improvements.
10. Intersection Capacity Analysis: Proposed access driveways and influenced intersections shall be subject to an existing plus projected capacity analysis. Projected traffic conditions shall include the effects of any committed developments with the influenced area. The existing and projected levels of service derived from the analysis shall be used to aid in the evaluation of design and operation alternatives of the access driveways and influenced intersections. The capacity analysis shall be in accordance with the techniques described in the most recent edition of the Transportation Research Board's "Highway Capacity Manual", Special Report 209.
11. Specialization Warrants: If it is anticipated that the development's driveway(s) or existing external non-signalized intersections will satisfy signalized warrants, a warrant analysis shall be conducted using the projected volumes determined from the trip generation. The results of such an analysis shall be tabulated in the traffic impact study.
12. Conclusions And Recommendations: Clear and concise descriptions of the findings shall be presented in the final report. These findings shall include all recommended improvements for access facilities, internal roadways and intersections, and external roadway and intersection improvements. (Ord. 2018-02-20, 2-20-2018)