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Town Center Plan
January 2007
Appendix 11
Professional offices/services/studios
10,000 sf (Low): EXP(0.77 x LN(10)+3.65) = 227
227 – 5% (linked) =
216 trips
17,500 sf (High): EXP(0.77*LN(17.5)+3.65) = 349
349 – 5% (linked) =
332 trips
Residential
100 dwellings: 100 x 9.5 trips per dwelling =
950 trips
Trip Generation by Development Scenario
Weekday, low food service/retail-high service
theater (2 daytime, 1 evening) + park + food, low + retail, low + services, high + residential
229 + 160 + 205 + 166 + 332 + 950 =
2,042 vehicle trips
Weekday, high food service/retail-low service
theater (2 daytime, 1 evening) + park + food, high + retail, high + services, low + residential
229 + 160 + 410 + 332 + 216 + 950 =
2,297 vehicle trips
Weekend, low food service/retail-high service @ 25%
theater (2 weekend) + park + food, low + retail, low + services, high + residential
182 + 160 + 205 + 166 + 54 + 950 =
1,717 vehicle trips
Weekend, high food service/retail-low service @ 25%
theater (2 weekend) + park + food, high + retail, high + services, low + residential
182 + 160 + 410 + 332 + 83 + 950 =
2,117 vehicle trips
Trip Distribution
The Cultural and Civic Area contains three different development zones which also have different travel
patterns. To the north is the E Street zone, consisting of residential development fronting E Street.
Between this area and the Chamber of Commerce is the Center zone, containing all commercial and
about half of all residential uses. Between the Chamber and Church Street is the Scoggins zone, another
residential development.
E Street
The E Street residential zone is projected to contain about 30 dwellings. All of these dwellings will have
either on-street or on-site parking accessible only from E Street. Thus the estimated 285 vehicle trips
per day generated by this development will all be directed onto E Street. It is not feasible at this time to
anticipate travel distribution beyond this point other than to note that most of these E Street trips would,
at least in the near future, most likely be directed onto Town Hall Drive.
A formula developed by traffic engineers to express as a ratio that larger office type uses generate less traffic on a per
square foot basis. The formula is the “Exponent of 0.77 x the Natural Logarithm of the use’s square feet (in thousands) + 3.65”.
A UNC-CH study for NCDOT of a walkable, mixed use development within the Triangle found that, on average, the
development pattern reduced each household’s vehicle trips per day by 1. As the proposed development is smaller and surrounded by
suburban development, the formula used reduces each household’s vehicle trips by 0.5, resulting in a trip generation multiplier of 9.5 rather
than 10.