CIEN 550 Transportation Design Trip Generation and Assignment for Commercial Dev

Question

CIEN 550 Transportation Design Trip Generation and Assignment for Commercial Development A 110,000 square-foot shopping center is planned for construction along an arterial in Greensboro. Determine the volumes using the proposed entrance to the site. PM Peak base volumes for the arterial are shown on the sketch below. Assume the same distribution for new trips as exists for base volumes. Shoppers from pass-by traffic accounts for 42% of the total shoppers. (HINT: Think about the last statement!) 600 vph 400 vph Base Volumes for PM Peak

Explanation / Answer

Given Area of the Shopping Center = 110,000 square foot

Average VehicleTrip end rate = 42.94 per 1000 SF per weekday

Daily Volume of vehicles = 42.94 x 110 = 4723 vehicles per weekday

PM Peak Hour Volume = 10.6% of Daily Volume = 10.6 x 4723/100=500 vph

PM peak hour directional split (a) Entering = 48% x 500 = 240 vph

(b) Exiting = 52% x 500 = 260 vph

Shoppers from Passer by traffic = 42% of total shoppers (i.e peak hour volume)

= 42% x 500 = 210 vph

SInce traffic flow remains the same as base flow throughout, the flow of traffic entering shall also be in the same ratio as that of vehicles from east to west i.e 400 : 600 = 2:3 ratio

Shoppers from Passer by Traffic East = (2/5) x 210 = 84 vph

Shoppers from Passer by Traffic West = 210 - 84 = 126 vph

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