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City of Frisco Engineering Standards

City of Frisco Engineering Standards

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<strong>Engineering</strong> <strong>Standards</strong><br />

Version 6/19/12<br />

H. Driveways Located in Right-Turn Lanes<br />

1. A driveway located within the right-turn lane <strong>of</strong> a public street intersection shall be spaced so<br />

that its closest edge will be a minimum <strong>of</strong> seventy-five feet (75’) in advance <strong>of</strong> the ROW line<br />

<strong>of</strong> the intersecting street. See Figure 2.23.<br />

2. If a driveway is located within the right-turn lane <strong>of</strong> a public street intersection, the storage<br />

length <strong>of</strong> the right-turn lane shall extend a minimum <strong>of</strong> one hundred feet (100’) beyond the<br />

upstream edge <strong>of</strong> the driveway (see Figure 2.23). No driveway shall be permitted within the<br />

taper area <strong>of</strong> a right-turn or deceleration lane.<br />

I. Driveway Deceleration Lanes - Deceleration lanes are required on Type A and B thoroughfares at<br />

all non-residential and multi-family driveways and shall meet the requirements <strong>of</strong> Section 2.03.D.<br />

J. Driveway Storage Lengths<br />

1. On-site internal storage shall be provided at all non-residential and multi-family driveways<br />

for queuing <strong>of</strong> vehicles <strong>of</strong>f-street, to minimize congestion, and increase safety both on the<br />

public street and within the driveway.<br />

2. Internal storage requirements shall be based on the number <strong>of</strong> parking spaces accessible by<br />

the affected driveway. Divide the total number <strong>of</strong> parking spaces by the number <strong>of</strong><br />

driveways and then use Table 2.11 to determine the amount <strong>of</strong> internal storage required. This<br />

calculation shall be based on the preliminary site plan for an overall development or the site<br />

plan for a specific lot, whichever produces the largest ratio <strong>of</strong> parking spaces per driveway.<br />

3. Internal storage length shall be measured from the ROW line to the first intersecting aisle,<br />

internal driveway, or parking stall.<br />

4. A circulation study will be required for all multi-story parking structures. Driveway storage<br />

requirements will be determined as a result <strong>of</strong> the study.<br />

TABLE 2.11: Minimum Driveway Storage Lengths<br />

Storage Required (ft)<br />

Parking Spaces per<br />

Multi-family or Commercial<br />

Driveway<br />

Uses<br />

Industrial Land Uses<br />

Non-Median<br />

Opening (1)<br />

Median<br />

Opening (2)<br />

Non-Median<br />

Opening (1)<br />

Median<br />

Opening (2)<br />

Less than 25 25 25 25 25<br />

25-50 25 40 25 40<br />

51-100 25 40 40 40<br />

101-200 40 80 40 60<br />

More than 200 100 150 40 100<br />

1. Includes driveways that connect to one-way frontage roads.<br />

2. Includes any driveway where a left-turn exit can be made, including driveways that connect to undivided roadways.<br />

Section 2 – Thoroughfare Design Requirements May 2012 Page 2-39

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