Land Use | Density Unit | Number | TRAFFIC GENERATION RATE | ||||
Number Per Acre | Number Per Unit | ||||||
Range | Typical | Unit | Range | Typical | |||
Land Use | Density Unit | Number | TRAFFIC GENERATION RATE | ||||
Number Per Acre | Number Per Unit | ||||||
Range | Typical | Unit | Range | Typical | |||
Residential Low density (single-family homes) | Dwelling units / acre | 1-5 | 5-65 | 40 | Dwelling unit | 7-12 | 9 |
Medium density (patio houses, duplexes, townhouses) | 6-15 | 40-150 | 75 | 5-8 | 7 | ||
High density (apartments) | 16-60 | 85-400 | 180 | 3-7 | 8 | ||
Commercial Retail commercial Neighborhood retail (supermarket) | Acres | 10 | 800 - 1,400 | 1,000 | 1,000 sq. ft. F.A. | 70-240 | 130 |
Community retail (junior dept. store) | 10-30 | 700 - 1,000 | 900 | 60-140 | 80 | ||
Regional retail (regional shopping center) | 30 | 400-700 | 600 | 30-50 | 40 | ||
Central area retail | High density | 700 - 1,300 | 900 | 10-50 | 40 | ||
Highway-oriented commercial (motels, service stations) | Low density | 100-300 | 240 | 4-12 | 10 | ||
Service commercial (office buildings) Single-story bldg. with surface parking | FAR(a) | 0.5:1 | 120 - 1,200 | 300 | 1,000 sq. ft. F.A. | 6-60 | 14 |
Two-story bldg. with surface parking | 1:1 | 240 - 2,400 | 600 | 6-60 | 14 | ||
Three- to six-story bldg. with deck parking | 2:1 | 360 - 6,000 | 1,200 | 6-60 | 14 | ||
Three- to six-story bldg. with surface parking | 5:1 | 1,200 - 12,000 | 2,600 | 6-60 | 14 | ||
High-rise office bldg. (more than 10 stories) with structure parking | 10:1 | 2,400 - 20,000 | 6-60 | 14 | |||
Industrial Highly automated industry; low employee density (refinery, warehouse) | Employees per acre | 5 | 2-8 | 4 | 1,000 sq. ft. F.A. | 0.2-1.0 | 0.6 |
Light service industry single-lot industry (lumber yard) | 5-20 | 6-30 | 16 | 0.4-1.2 | 0.8 | ||
Industrial tract (5 acres) (machinery factory) | 20-100 | 30-160 | 70 | 0.6-4.0 | 2.0 | ||
Office campus: research and development (research industry) | 100 | 150-200 | 170 | 3-8 | 4 | ||
Mixed central industry; small industrial plants | Varies | 10-100 | 1-4 | ||||
Public & semipublic uses Schools & colleges | No. of students | Varies | 7-600 college | 60 | Students | 0.4-1.0 | 0.8 |
Places of public assembly (theater, stadium convention center) | No. attending | 4 seats (stadia) | 2 | ||||
Administration facilities (city hall, state offices, post offices) | FAR(a) | 70-600 | 200 | 1,000 sq. ft. F.A. | 10-60 | 20 | |
Recreation facilities (park, zoo, beach, golf course) | 1-10 (parks) | 4 | Acre (golf course) | 2-10 | 8 | ||
Terminals (bus terminal, airport) | 3-30 | 15 | Based (aircraft)(b) | 6-12 | 8 | ||
Hospitals | No. of beds | 16-70 | 40 | Bed(c) | 6-16 | 10 | |
(a) Floor area ratio.
(b) Local airport.
(c) Person-trip ends.
SOURCES FROM:
1. Highway Research Board, Washington, D.C., Protection of Highway Utility, NCHRP Report 121
2. Baker, Robt, Handbook of Highway Engineering, Krieger Publishing Co., Malabar, FL, 1982
(Ord. 95-Z-01, passed 2-13-95)