Table 33. Minimum Number of
Subdivision Access Points
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---|---|
# Lots
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Minimum Access Points
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0-49
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2
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50-149
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2
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150-299
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3
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300-499
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4
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500+
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1+ 0.7 per 100 lots
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Table 34. Dimensions for Driveways
at Non-State Maintained Roadways
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---|---|---|---|
Criteria
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Street Classification
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Nonresidential and
Multi-Family Driveway
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Service Driveway
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Driveway Throat Width
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Arterial Streets
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24-40'
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30-48'
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Collector Streets
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24-40'
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30-48'
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Local Streets
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24-36'
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28-40'
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Driveway Curb Radius
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Arterial Streets
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20-30'
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25-30'
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Collector Streets
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10-20'
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10-20'
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Local Streets
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10-20'
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10-20'
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Minimum Distance to Intersection
Along Roadway
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Arterial Streets
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200'
|
200'
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Collector Streets
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150'
|
150'
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Local Streets
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50'
|
100'
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Minimum Centerline Driveway
Spacing Along Roadway
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Arterial Streets
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250'
|
250'
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Collector Streets
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150'
|
150'
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Local Streets
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100'
|
100'
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Notes:
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1
|
The requirements for Driveway Throat
Width and Driveway Curb Radius are for standard undivided two-way
operation and may be varied by the City Engineer if traffic volumes,
truck usage, common driveways, and other factors warrant such.
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2
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Minimum centerline spacing does not
implicitly determine the number of driveways allowed. Driveways served
by deceleration lanes may be spaced at closer intervals if approved
by the City Engineer.
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3
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Distance measured from the intersection
Right-of-Way line to the centerline of the proposed driveway.
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4
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Nonresidential, multi-family and
service driveways shall not be permitted on Local Streets.
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Table 35. Required Driveway
Stacking
| ||
---|---|---|
Average Number of Parking Spaces
per Driveway*
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Total Number of Parking Spaces**
|
Minimum Stacking Length
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20-49
|
20-49
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Landscape edge width +20'
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50-199
|
50'
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200+
|
75'
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50-199
|
50-199
|
75'
|
200+
|
100'
| |
200+
|
200+
|
100'
|
Notes:
| |
1
|
The average number of parking spaces
per driveway is calculated by dividing the total number of parking
spaces by the number of commercial and multi-family driveways. (Service
driveways are not included in the calculation.)
|
2
|
The total number of parking spaces
is the sum of all spaces accessible by a driveway or driveways both
on-site and off-site. The internal storage shall be separated from
parking areas by a five-foot (5') wide, raised curb island or median.
Planting requirements for the island or median shall be one (1) Small
Tree and one (1) five-gallon (5 Gal.) shrub for every fifteen (15)
linear feet. Appropriate signage (e.g. stop, yield, etc.) shall be
placed for any vehicular cross movement or internal circulation that
intersects the ingress/egress circulation beyond the required internal
storage.
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Table 36. TIA Requirements
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---|---|---|---|
Examples
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Applicability
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Analysis Periods
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Notes
|
Zoning
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Zoning requests and Thoroughfare
Plan amendments, if no previous traffic assessment was performed.
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All zoning requests for land uses
that will generate 2,500 or more vehicle trips per day or contain
a density of 0.75 Floor Area Ratio (FAR) or greater.
All zoning requests for single family
residential development with the following exemptions:
• Development density of six
(6) dwelling units per acre or less, or
• Special circumstances exist,
as determined by the City Engineer, such as:
-Impacts to other residential development
from cut-through traffic,
-Inadequate site accessibility,
-The implementation of the surrounding
Transportation Master Plan is not anticipated during the estimated
time period of the proposed development,
-Internal street or access system
is not anticipated to accommodate the expected traffic generation,
or
-The development is outside the urban
core of the community.
Other zoning requests that do not
meet the daily trip generation threshold may also require a TIA if
special circumstances exist, as determined by the City Engineer, such
as:
• Impacts to residential neighborhoods
from nonresidential development,
• Inadequate site accessibility,
• The implementation of the
surrounding thoroughfare plan is not anticipated during the estimated
time period of the proposed development,
• The proposed land use differs
significantly from that contemplated in the comprehensive plan, or
• The internal street or access
is not anticipated to accommodate the expected traffic generation.
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Analysis periods shall include build
and no-build scenarios. Assume full occupancy and buildout.
The analysis periods for a zoning
TIA shall be:
• Opening year,
• 5 years after opening, and
• 10 years after opening.
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Study Area:
• All site access drives
• All signalized intersections
or major unsignalized street intersections within 1/2 to 1 mile of
site boundary
• For certain projects the City
may require an enlarged study area. Land uses within the Study Area
should include recently approved or pending development adjacent to
site.
Additional Requirements:
Depending upon specific site development
characteristics of the proposed development, one or more of the following
elements may also be required by the City Engineer as part of the
TIA:
• An accident analysis,
• Sight distance survey,
• Traffic simulation,
• Queuing analysis, or
• Turn lane analysis.
Action:
The need for a TIA shall be determined
by the City Engineer based upon the results and recommendation from
a Presubmission Meeting.
It shall be the responsibility of
the Applicant to demonstrate that a TIA should not be required.
|
Development
| |||
Site Plans, and Preliminary Plats
or Final Plats, if no TIA was previously performed.
|
All development requests for land
uses that will generate over 100 total trips during the AM or PM peak
hour, or 750 daily trips.
An additional separate analysis may
be required when site-generated peak hour trip activity is different
from that of the adjacent street (weekday 7-9am, 4-6pm), as determined
by the City Engineer. Such circumstances may include, but not be limited
to commercial/retail, entertainment or institutional activity.
Development with 50-500 peak hour
trips may require a TIA, as determined by the City Engineer.
The City Engineer may waive the TIA
for a Site Plan if a TIA was performed with the zoning request and
conditions listed in the report are current.
|
Analysis periods shall include build
and no-build scenarios. Assume full occupancy and buildout.
The analysis periods for a development
TIA with >50 peak hour driveway trips, or 100-500 total peak hour
trips, shall be:
• Existing year,
• Opening year, and
• 5 years after opening
The analysis periods for a development
TIA with >500 total peak hour trips shall be:
• Existing year,
• Opening year,
• 5 years after opening*, and
• 10 years after final opening
with full build out
*TIA study not required if the traffic
impacts of the project are fully mitigated 10 years after opening
with existing conditions plus 5-year programmed improvements.
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Table 37. Criteria for Determining
Study Update Requirements
| ||
---|---|---|
Original Report
|
Changes to the Original Proposed
Development
| |
Access Changed* or Trip Generation
Increased by >10%
|
Access Not Changed and Trip
Generation Increased by <10%
| |
Submittal
<2 years old
|
Letter amendment required: Identify
and report only analysis conditions that changed.
|
Letter documenting change (no other
reports required).
|
Submittal
>2 years old
|
Prepare new study: Must meet all
current TIA requirements.
|
Prepare new study: Must meet all
current TIA requirements.
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*Changed access includes proposed
new access or refinement of general access locations not specifically
addressed in original proposed development.
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