City of Frisco Engineering Standards

Engineering Standards
H. Driveways Located in Right-Turn Lanes
1. A driveway located within the right-turn lane of a public street intersection shall be spaced so
that its closest edge will be a minimum of seventy-five feet (75’) in advance of the ROW line
of the intersecting street. See Figure 2.23.
2. If a driveway is located within the right-turn lane of a public street intersection, the storage
length of the right-turn lane shall extend a minimum of one hundred feet (100’) beyond the
upstream edge of the driveway (see Figure 2.23). No driveway shall be permitted within the
taper area of a right-turn or deceleration lane.
I. Driveway Deceleration Lanes - Deceleration lanes are required on Type A and B thoroughfares at
all non-residential and multi-family driveways and shall meet the requirements of Section 2.03.D.
J. Driveway Storage Lengths
1. On-site internal storage shall be provided at all non-residential and multi-family driveways
for queuing of vehicles off-street, to minimize congestion, and increase safety both on the
public street and within the driveway.
2. Internal storage requirements shall be based on the number of parking spaces accessible by
the affected driveway. Divide the total number of parking spaces by the number of
driveways and then use Table 2.11 to determine the amount of internal storage required. This
calculation shall be based on the preliminary site plan for an overall development or the site
plan for a specific lot, whichever produces the largest ratio of parking spaces per driveway.
3. Internal storage length shall be measured from the ROW line to the first intersecting aisle,
internal driveway, or parking stall.
4. A circulation study will be required for all multi-story parking structures. Driveway storage
requirements will be determined as a result of the study.
TABLE 2.11: Minimum Driveway Storage Lengths
Storage Required (ft)
Parking Spaces per
Multi-family or Commercial
Driveway
Uses
Industrial Land Uses
Non-Median
Opening (1)
Median
Opening (2)
Non-Median
Opening (1)
Median
Opening (2)
Less than 25 25 25 25 25
25-50 25 40 25 40
51-100 25 40 40 40
101-200 40 80 40 60
More than 200 100 150 40 100
1. Includes driveways that connect to one-way frontage roads.
2. Includes any driveway where a left-turn exit can be made, including driveways that connect to undivided roadways.
Section 2 – Thoroughfare Design Requirements May 2012 Page 2-39