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Development Guidelines & Improvement Standards
APPENDICES
Appendix 1: Thresholds for requiring traffic studies

Land Use
Unit of Measurement
Threshold
Residential
Single-Family Detached Housing D.U. 50 Units
Apartment, General D.U. 50 Units
Low-Rise Apartment (1-2 stories) D.U. 50 Units
High-Rise Apartment (3-plus stories) D.U. 50 Units
Mobile Home D.U. 50 Units
Retirement Community D.U. 50 Units
Townhouse D.U. 50 Units
Condominimum D.U. 50 Units
Lodging
Hotel (convention oriented) Room 75 Rooms
Motel Room 75 Rooms
Resort Hotel Room 75 Rooms
Recreational
Golf Course Parking Space 100 spaces
Racquet Clubs 1,000 Sq. Ft. 15,000 Sq. Ft.
Athletic Club 1,000 Sq. Ft. 10,000 Sq. Ft.
Institutional
Elementary-Intermediate Student 150 Students
High School Student 150 Students
Junior/Community College Student 150 Students
University Student 200 Students
Library 1,000 GSF 7,500 Sq. Ft.
Day Care Center Children 50 Children
Nursing Home Bed 100 Beds
Medical
Hospital Bed 100 Beds
Clinic (Diagnostic/Out Patient) 1,000 Sq. Ft. 5,000 Sq. Ft.
Drug Store 1,000 Sq. Ft. 5,000 Sq. Ft.
Medical Office 1,000 Sq. Ft. 5,000 Sq. Ft.
Dental Lab Employee 50 Employees
Office
Office Buildings 1,000 Sq. Ft. 50,000 Sq. Ft.
Office Park 1,000 Sq. Ft. 50,000 Sq. Ft.
Research Center 1,000 Sq. Ft. 50,000 Sq. Ft.
Post Office 1,000 Sq. Ft. 2,500 Sq. Ft.
Retail
Specialty Retail Center 1,000 Sq. Ft. 10,000 Sq. Ft.
Discount Stores 1,000 Sq. Ft. 7,500 Sq. Ft.
Hardware/Paint Stores 1,000 Sq. Ft. 7,500 Sq. Ft.
Barber Shop Chair 10 Chairs
Cleaners 1,000 Sq. Ft. 5,000 Sq. Ft.
Shopping Center 1,000 Sq. Ft. 5,000 Sq. Ft.
New/Used Car Sales 1,000 Sq. Ft. 10,000 Sq. Ft.
Supermarket 1,000 GSF 10,000 Sq. Ft.
Convenience Market - 24 Hour 1,000 GSF 3,000 Sq. Ft.
Convenience Market- 15 - 16 Hour 1,000 GSF 3,000 Sq. Ft.
Delicatessen Market 1,000 Sq. Ft. 5,000 Sq. Ft.
Services
Bank - Walk-In 1,000 GSF 5,000 Sq. Ft.
Bank - Drive-In 1,000 Sq. Ft.
(Lobby)
2,000 Sq. Ft.
Savings & Loan - Walk-In 1,000 GSF 5,000 Sq. Ft.
Savings & Loan - Drive-In 1,000 GSF 4,000 Sq. Ft.
Restaurant
Quality Restaurant Seat 100 Seats
1,000 Sq. Ft. 5,000 Sq. Ft.
High-Turnover, Sit-Down Seat 75 Seats
1,000 Sq. Ft. 2,000 Sq. Ft.
Fast-Food Restaurant Seat 50 Seats
With Drive-Through Service 1,000 Sq. Ft. 1,000 Sq. Ft.
Automotive Services
Service Station Pump 10 Pumps
Auto Upholstery Shop 1,000 Sq. Ft. 25,000 Sq. Ft.
Auto Parts 1,000 Sq. Ft. 5,000 Sq. Ft.
Auto Repair & Body Parts 1,000 Sq. Ft. 50,000 Sq. Ft.
Transmission Shop 1,000 Sq. Ft. 50,000 Sq. Ft.
Car Wash Bays 5 Bays
Wholesale Stores
Wholesale 1,000 GSF 50,000 Sq. Ft.
Produce Market 1,000 Sq. Ft. 10,000 Sq. Ft.
Churches
Church Member 250 Members
Warehouse
Industrial - Warehouse - Manufacturer 1,000 Sq. Ft. 25,000 Sq. Ft.
Mini Warehouse Units 200 Units
Industrial Park 1,000 Sq. Ft. 25,000 Sq. Ft.
Entertainment
Movie Theaters Screen 2 Screens

Revised: 11/10/1997

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