TRIP GENERATION STUDY - SNHPC | Southern New …

1 trip GENERATION . STUDY . October 2010. 1. TABLE OF CONTENTS. TABLE OF CONTENTS .. 2. CHAPTER 1 INTRODUCTION .. 4. CHAPTER 2 5. Land use 5. Criteria .. 5. Methodology .. 5. Methodology for Local trip GENERATION Rate 7. Data Collection .. 7. Data Analysis .. 7. 8. Comparison of trip 8. Further STUDY .. 8. CHAPTER 3 ELDERLY HOUSING ATTACHED (252) .. 9. Data Collection .. 9. Data Analysis .. 9. 11. Comparison of trip 13. CHAPTER 4 ADULT HOUSING DETHATCHED (251) .. 14. Data Collection .. 14. Data Analysis .. 14. 15. Comparison of trip 15. CHAPTER 5 DAY CARE CENTER (565).. 17. Data Collection .. 17. Data Analysis .. 17. 19. Comparison of trip 20. CHAPTER 6 DRIVE-THROUGH ONLY COFFEE 22. Data collection .. 22. Data Analysis .. 22. 23. Comparison of trip 24. CHAPTER 7 UNITED STATES POST OFFICE (732).. 25. Data Collection .. 25. Data Analysis .. 25. 27. Comparison of trip 29. CHAPTER 8 PHARMACY/DRUGSTORE WITH DRIVE-THROUGH WINDOW. (881).. 30. Data Collection .. 30. Data Analysis.

2 30. 32. Comparison of trip 33. CHAPTER 9 LARGE BOOK STORE .. 34. 2. Data Collection .. 34. Data Analysis .. 34. 35. Comparison of trip 35. CHAPTER 10 CLINIC (630).. 37. Data Collection .. 37. Data Analysis .. 37. 38. Comparison Of trip Rates .. 38. CHAPTER 11 NURSING HOME (620) .. 40. Data Collection .. 40. Data Analysis .. 40. 41. Comparison of trip 41. CHAPTER 12 GENERAL OFFICE BUILDING < SQ. FT (710) .. 43. Data Collection .. 43. Data Analysis .. 43. 44. Comparison of trip 44. CHAPTER 13 CHURCH (560).. 46. Data Collection .. 46. Data Analysis .. 46. 48. Comparison of trip 52. CHAPTER 14 PARK-AND-RIDE LOT WITH BUS SERVICE (090) .. 54. Data Collection .. 54. Data Analysis .. 54. 56. Comparison of trip 58. APPENDIX I ITE trip REPORT LAND USE .. 59. APPENDIX II SAMPLE COUNT REPORT .. 63. APPENDIX III HOURLY VARIATION OF TRAFFIC .. 64. 3. CHAPTER 1 INTRODUCTION. As part of Fiscal Year 2009 Unified Planning Work Program (UPWP), the Southern New hampshire Planning Commission ( SNHPC ) continued to work on a regional trip GENERATION STUDY .

3 The Institute of Transportation Engineers (ITE) trip GENERATION . report provides trip rates for 162 individual land use types in 10 categories. A complete list of these land use types can be found in Appendix I. The ITE report can be used to estimate the number of vehicle trips generated by a proposed development. This document is based on trip GENERATION studies submitted by public agencies, developers, consulting firms, and associations. It presents trip GENERATION rates and equations for time periods such as average weekday, Saturday, Sunday, as well as for weekday morning and evening peak hours. Data is presented for the peak hours of adjacent street traffic as well as for the peak hours of the generator site itself. ITE rates represent national averages and may vary from area to area, as demonstrated by the range of rates presented in ITE trip GENERATION for any land use type. There are land use types for which the trip rates are based on only a few samples, while in other cases some land use types are not represented at all.

4 ITE encourages supplementing the data base with locally collected data. It was decided that a local trip GENERATION STUDY should be performed for the SNHPC region. The principal purpose of this STUDY is to develop local trip GENERATION rates for land use types in the region for which ITE data is lacking. A secondary purpose of the STUDY is to compare locally gathered data with that provided in the ITE trip report. CHAPTER 2 METHODOLOGY. This STUDY includes two steps 1) land use selection; 2) local trip GENERATION rates development. The following section describes the methodologies these two steps. Land use selection Criteria The following criteria were used to select sites for the trip GENERATION STUDY : Land uses selected must exist in the Southern New hampshire region encompassing the Towns of Auburn, Bedford, Candia, Chester, Deerfield, Derry, Goffstown, Hooksett, Londonderry, New Boston, Raymond, Weare and the City of Manchester. Sites outside the region could be selected if insufficient sites exist in the SNHPC region.

5 Land uses selected should be valuable to the regional needs. Land uses selected should have small sample sizes in the ITE trip report. Land uses selected should be sites for which data can be captured readily and accurately. Methodology An initial list of all land use types included in ITE trip GENERATION was compiled (Appendix I). From this list, land use types were then selected for inclusion in the STUDY using the above-mentioned criteria. Letters were sent to Town officials and private consultants requesting input on the land use types to be included. Five towns and two consultants responded to these requests. After combining the SNHPC list with all other requests, a revised list was prepared. This list included a total of 66 land use types of which seven did not exist in the ITE trip GENERATION . The list was finalized by eliminating land use types judged to be hard to find in the region or for which data could not be accurately collected. Table shows the land use types included in the STUDY .

6 The list has been refined as a part of this STUDY , which has been designed as an annual on- going project for the SNHPC . Table Selected Land Uses Included in the trip GENERATION STUDY ITE Code Land Use 90 Park-and-Ride Lot w/ Bus Service 110 General Light Industrial 130 Industrial Park 150 Warehousing 210 Single-Family Detached Housing 220 Apartment 230 Residential Condominium/Townhouse 231 Low-Rise Residential Condominium Townhouse 232 High-Rise Residential Condominium Townhouse 5. ITE Code Land Use 251 Senior Adult Housing Detached 252 Senior Adult Housing Attached 253 Congregate Care Facility 254 Assisted Living 310 Hotel 411 City Park 416 Campground/Recreational Vehicle Park 492 Health Club/Fitness Club 520 Elementary School 560 Church 561 Synagogue 565 Day Care Center 566 Cemetery 590 Library 630 Clinic 640 Animal Hospital/Veterinary Clinic 710 General Office Building 720 Medical Dental Office Building 731 State Motor Vehicles Department 732 United States Post Office 814 Specialty Retail Center 816 Hardware/Paint Store 817 Nursery (Garden Center).

7 818 Nursery (Wholesale). 820 Shopping Center 843 Automobile Parts Sales 850 Supermarket 853 Convenience Market with Gasoline Pumps 861 Sporting Goods Superstore 866 Pet Supply Superstore 867 Office Supply Superstore 868 Book Superstore 879 Arts and Crafts Store 880 Pharmacy/Drugstore w/o Drive-Through Window 881 Pharmacy/Drugstore with Drive-Through Window 896 Video Rental Store 912 Drive-in Bank 918 Hair Salon 925 Drinking Place 931 Quality Restaurant 933 Fast-Food Restaurant w/o Drive-Through 934 Fast-Food Restaurant with Drive-Through 6. ITE Code Land Use 935 Fast-Food w/ Drive- Through and no Indoor Seating 938 Coffee/Donut w/ Drive Through and no Indoor Seating 939 Bread/Donut/Bagel w/o Drive-Through Window 940 Bread/Donut/Bagel w/ Drive-Through Window 941 Quick Lubrication Vehicle Shop 943 Automobile Parts and Service Center 944 Gasoline/Service Station 945 Gasoline/Service Station w/ Convenience Market 946 Gasoline/Service Station w/ Convenience Market and Car Wash - Gravel Pit - Senior centers - Large scale box-store developments - Large function facilities-gaming/poker charity event - Dunking Donut drive through - Wholesale Club with Gasoline Pumps - Remote Automated Teller Machine (ATM).

8 Methodology for Local trip GENERATION Rate Development Data Collection Based on the land use listing, sites are selected on an annual basis for the STUDY . Local officials are then contacted for assistance to obtain permission to conduct data collection on the sites selected. Automatic traffic recorders (ATRs) are used to collect data at the selected sites. ATRs are installed for one to two weeks at each site. The data collected is evaluated before being added to the database. Manually traffic counts are used to collect data at the selected sites where permissions can't be obtained or accurate counts can't be collected by ATRs. In addition to the traffic volume counts, additional data required for use in developing trip GENERATION rates for each site ( , number of employees, floor area of the building, number of students, etc.) is subsequently gathered. Data Analysis Data collected in the field is downloaded using TASPLUS software and formatted as 24. hour traffic volume reports.

9 A sample count report is shown in Appendix II. Data for each site is then entered into a worksheet to determine weekday totals, average, morning peak and evening peaks of the generator as well as traditional morning and evening peaks of the adjacent street traffic. Similar calculations are made for the weekend traffic. In some cases where one-way driveways exist, only one driveway was counted (entering the site) due to equipment limitations. In such cases, it was assumed that exiting traffic will be the same as entering traffic for the same hour. A graph showing the hourly variation of average weekday, average Saturday, and average Sunday traffic for each surveyed site is shown in Appendix III. 7. Results As stated earlier, additional data collected for the land uses in the STUDY is applied to the traffic data to calculate the trip rates per unit ( , trips per employee, trips per 1000 sq. ft., etc.). Graphical plots and statistical calculations will be performed when sufficient samples have been added to the data base.

10 As the project continues, these calculations will be completed and the results will be reported and added to the data base. Comparison of trip Rates This STUDY is designed to compare locally generated trip rates with trip rates in the ITE. data base. ITE trip rates represent an average of nationally collected trip data. Local trip rates may vary from these nationally averaged rates based on factors such as location ( , CBD, outer limits of the city, suburb, rural area, etc.), the existing transportation system ( , freeway, major arterial, local streets, etc.) and the presence of any other major trip generators. The trip rates in this report represent a weighted average and may vary after more data is collected. Further STUDY As mentioned earlier, the trip GENERATION STUDY is designed as a multiyear project. The reliability of the data and observations drawn from it will increase with the number of sites studied. Due to time and fiscal constraints, a limited number of sites can be surveyed each year.