HomeMy WebLinkAboutAdmin Order 58-02-02-F
ADMINISTRATIVE ORDER NO. 58-02-02-F
of the
City Manager pro tem of the City of Eugene
ADOPTION OF STANDARDS FOR TRAFFIC IMPACT ANALYSES (TIA)
ADMINISTRATIVE RULE R-9.8650.
The City Manager pro tem of the City of Eugene finds as follows:
A. Section 2.019 of the Eugene Code, 1971 (EC) authorizes the City Manager to adopt
rules for administration and implementation of any provisions of that Code, including provisions of
EC Chapter 9 that require the submission of an application for Traffic Impact Analysis Review.
B. Pursuant to that authority, and based on the findings contained in Administrative
Order No. 58-02-02 issued on January 31, 2002 the City Manager proposed the adoption of
Standards for Traffic Impact Analyses (TIA) Administrative Rule R-9.8650.
c. Notice of the proposed rule adoption was published in the Register-Guard for five
consecutive days, to-wit, on February 4, 5, 6, 7, and 8, 2002. The Notice was also made available
to persons who had requested such notice, and provided that written comments would be received
thereon for a period of 30 days from the first date of publication. There were no written comments
received within the time or in the manner required by the notice.
Based upon the above findings, which are hereby adopted, and pursuant to the authority
contained in Section 2.019 and Chapter 9 of the Eugene Code, 1971, I hereby adopt Standards for
Traffic Impact Analyses Administrative Rule R-9.8650 as follows:
STANDARDS FOR TRAFFIC IMPACT ANALYSES
ADMINISTRATIVE RULE R-9.8650
R-9.8650-A Traffic Impact Analysis ITIA) - Purpose.
As provided in EC 9.8650, the purpose of Traffic Impact Analysis Review (TIA review) is
to ensure that developments that will generate a significant amount of traffic, cause an increase in
traffic that will contribute to traffic problems in the area, or result in levels of service of the roadway
system in the vicinity of the development that do not meet adopted level of service standards provide
the facilities necessary to accommodate the traffic impact of the proposed development. In addition,
any TIA Review addressing streets in the jurisdiction of Lane County is also designed to ensure that
cross sectional elements of streets, such as the wearing coarse or pavement, base material, soils, or
storm water structures (bridges or culverts) have the adequate capacity to accommodate
developments that utilize vehicles of heavy weight and associated vehicle traffic as part of their
activity.
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R-9.8650-B Traffic Impact Analysis (TIA) - Applicability.
As provided in EC 9.8670, a TIA Review is required when one of the following conditions
exist:
1. The development will generate 100 or more vehicle trips during any peak hour as
determined by using the most recent edition of the Institute of Transportation Engineer's Trip
Generation Manual. In developments involving a land division, the peak hour trips shall be
calculated based on the likely development that will occur on all lots resulting from the land division.
See R-9.8650-C for manner of calculations.
2. The increased traffic resulting from the development will contribute to traffic
problems in the area based on current accident rates, traffic volumes or speeds that warrant action
under the city's traffic calming program, and identified locations where the City's concern for
pedestrian and/or bicyclist safety is documented.
3. The city has performed or reviewed traffic engineering analyses that indicate approval
of the development will result in levels of service of the roadway system in the vicinity of the
development that do not meet adopted level of service standards.
4. For development sites that abut a street in the jurisdiction of Lane County, a Traffic
Impact Analysis Review is required if the proposed development will generate or receive traffic by
vehicles of heavy weight in their daily operations.
As used herein, "daily operations" does not include routine services provided to the site by
others, such as mail delivery, garbage pickup, or bus service. "Daily operations" does include, but
is not limited to, delivery (to or from the site) of materials or products processed or sold by the
business occupying the site. As used herein, "heavy vehicles" are defined as a single vehicle or
vehicle combination greater than 26,000 pounds gross vehicle weight or combined gross vehicle
weight respectively.
R-9.8650-C Traffic Impact Analysis (TIA) - Approval Criteria.
As provided in EC 9.8680, approval, conditional approval, or denial of an application for
Traffic Impact Analysis Review shall be based on compliance with the following criteria:
1. Traffic control devices and public or private improvements as necessary to achieve
the purposes ofR-9.8650-A will be implemented. These improvements may include, but are not
limited to, street and intersection improvements, sidewalks, bike lanes, traffic control signs and
signals, parking regulation, driveway location, and street lighting.
2. Public improvements shall be designed and constructed to the standards specified in
EC 9.6505 Improvements - Specifications. The requirement of improvements based on a traffic
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impact analysis does not negate the ability of the City Traffic Engineer to require improvements by
other means specified in the Eugene Code, 1971 or rules or regulations adopted thereunder.
3. In addition to the above criteria, if the Traffic Impact Analysis Review was required
based onR-9.8650-B-4. (EC 9.8670(4)), the improvements shall also address the structural capacity
of the street in the County's jurisdiction and address identified structural deficiencies, or reduction
in the useful life of existing street structures related to the proposed development. Improvements
may be needed to eliminate the identified structural deficiencies and to accommodate vehicle
impacts to structures.
R-9.8650-D Traffic Impact Analysis (TIA) - Determination of Peak Hour Trips.
The determination of peak hour trips shall be made by consulting the most current version
of the Institute of Transportation Engineers' Trip Generation Manual.
R-9.8650-E Traffic Impact Analysis (TIA) - Exception to Requirements.
As part of a Type II or III review, the City Planning Director, or designee, may grant an
exception to any or all of the content requirements ofR-9.8650-F when both of the following are
met:
1. A development will generate less than 100 trips in any peak hour.
2. The applicant has demonstrated that submittal of the item(s) listed in R-9.8650-F is
not necessary in order to show compliance with the approval criteria ofR-9.8650-C.
R-9.8650-F Traffic Impact Analysis (TIA) - Report Requirements.
Unless an exception is granted pursuant to R-9.8650-E, the following items are required as
part of a TIA:
1. Report Certification. All traffic studies shall be prepared by or under the direct
supervision of a Professional Civil or Traffic Engineer currently licensed to practice within the State
of Oregon, and with special training and experience in transportation engineering and planning. The
engineer shall certify the TIA document by providing a signature and seal of approval.
2. Extent of Study Area. The applicant and the City Traffic Engineer, or designee shall
agree on the defined study area prior to commencement of the preparation of the TIA. The analysis
must include an examination of all site access drives, adjacent roadways, and other roadways and
intersections that will receive 50 or more additional peak hour trips as a result of completion of the
proposed development or land use application.
3. Selection of Horizon Years for Data Required by R-9.8650-F-4 to F-l1.
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Where a standard in R-9.8650-F-4 to F-ll specifically requires data just for existing
conditions, the TIA only needs to address the circumstances at the time of the application. For all
other standards in R-9.8650-F-4 to F-ll, data shall be provided as follows:
3.1 For projects that are not phased, the TIA shall assess the traffic conditions at
the time of the application, those expected at the anticipated time of completion of the entire
project, and at 5 years after completion.
3.2 For projects that are phased, the TIA shall assess the traffic conditions at the
time of the application, those expected at the anticipated time of completion of each phase,
and at 5 years after completion of the entire project.
4. Study Area Data. The TIA must include the following data. The information is
available from the City, other impacted jurisdictions, or may be obtained in the field. (See TIA
Format, Exhibit A; included for reference, but not adopted.)
4.1 Traffic Volumes.
4.1.1 Daily and hourly traffic counts that verify traffic growth and peak hour
times for the year prior to application on each street within the study area that carries
traffic directly to or from the proposed development.
4.1.2 Intersection turning movement counts at all intersections within the
study area to quantify existing traffic volumes and patterns.
4.1.3 Percentage of traffic that consists of heavy vehicles, including trucks
and buses; for daily and peak periods.
4.1.4 Pedestrian and bicyclist counts.
4.1.5 Daily and peak hour volumes for the intersections identified in 4.1.2,
and the proposed access points.
4.1.6 A determination of the need for YIELD, STOP, Traffic Signals, or
other traffic control devices at any horizon year, based on warrants in the current
edition of the "Manual on Uniform Traffic Control Devices" (MUTCD).
4.2 Land Use.
4.2.1 Existing zoning, land use designations, densities, and occupancy of
lots within 500 feet of the development site.
4.2.2 Other approved development projects and planned completion dates
within the study area.
4.2.3 Known or anticipated developments within the study area.
4.3 Demographics. Population and employment information within the study area
by traffic analysis zone (as needed for use in site traffic distribution and assignment).
(Available from LCOG staff.)
4.4 Existing Transportation System.
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4.4.1 Street system characteristics in the study area, including number of
lanes, lane and shoulder widths, access control, and traffic control devices.
4.4.2 A description of roadway geometrics, including horizontal and vertical
curvature.
4.4.3 Roadway functional classifications.
4.4.4 Posted speed limits and/or free-flow speeds.
4.4.5 Traffic signal locations, phasing, coordination and timing.
4.4.6 Congested locations within the study area as identified by the City or
previous traffic studies at the time of application.
4.4.7 Accident history for 3 years prior to the application on major roadway
links and intersections within the study area.
4.4.8 Transit stops, service, and usage.
4.4.9 Pedestrian and bicycle linkages.
4.4.1 0 Available curb and off-site parking facilities.
5. Peak Traffic Hours. The TIA shall include peak hour traffic counts for all streets
within the study area at the time of application. Existing traffic counts (less than 2 years old) may
be factored by an average 2% per year growth rate to establish the forecasted background traffic
volumes. Growth rates less than this amount may be used for those roadways that are already
approaching their theoretical capacity during peak periods if the lower growth rates are justified by
a different methodology presented by a professional traffic engineer. Traffic counts shall be
provided for:
5.1 The weekday a.m. peak-traffic period (a one-hour peak in morning traffic
volumes occurring between 7:00 a.m. and 9:00 a.m.).
5.2 The weekday p.m. peak-traffic period (a one-hour peak in afternoon traffic
volumes occurring between 4:00 p.m. and 6:00 p.m.).
5.3 The weekday midday peak-traffic period (a one-hour peak in traffic volumes
between 11 :30 a.m. and 12:30 p.m.).
5.4 The peak-traffic period on Saturday (a one-hour peak in traffic volumes
between 1 :30 p.m. and 2:30 p.m.).
6. Estimation of Trips Generated. The TIA shall include an estimate of the trips the
proposal will generate. Proj ect trip generation rates shall be estimated using the most current version
of the Institute of Transportation Engineers' Trip Generation Manual. Where available, equations
may be used rather than average trip generation rates, but only if there are at least 20 data points in
the sample and the Coefficient of Determination (R2) for the sample is greater than 0.75.
7. Site Traffic Distribution and Assienment. The TIA shall include manual traffic
distribution and assignment based on the gravity model principle. The distribution and assignment
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may be accomplished using experience, judgment, and knowledge of local conditions.
8.
include:
Transportation Systems and Level of Service Requirements. The TIA shall
8.1 Roadway and Intersection Capacity.
8.1.1 All streets and intersections contiguous to the development;
8.1.2 All streets and intersections that provide direct access to or from the
development, regardless of the generated volume of traffic;
8.1.3 All streets and intersections off site from the development that will
receive 50 or more additional peak-hour vehicular trips upon completion of any
phase of the development;
8.1.4 Level of Service standards for the completed development as
calculated by methods identified in the most current edition of the Transportation
Research Board's Highway Capacity Manual or Highway Capacity Software. Other
capacity analysis programs may be used if approved by the City Traffic Engineer, or
designee. All intersections and/or street segment links within the study area must be
evaluated for capacity. The manual and software contain separate calculations for
two-lane and multi-lane free-flow roadways, signalized arterials, and signalized and
unsignalized intersections.
8.2 Roadway and Intersection Safety. Projected accident rates for off-site streets
and intersections that will receive 50 or more additional peak hour trips upon completion of
the development, taking into consideration proposed mitigation measures including access
restrictions. Accident records must be researched for all critical segment links and
intersections within the study area. If accident rates, or patterns of accidents, are forming at
certain locations, a determination must be made on whether the probability of these
occurrences will increase with the addition of the projected traffic volumes. Examples of
recurring accidents include numerous right-angle or rear-end collisions at an intersection, or
a high frequency of vehicles leaving the roadway on a horizontal curve.
9. Meeting Minimum Level of Service and Safety Standards. The traffic study shall
identify mitigation measures to meet a minimum level of service and safety standards. The TIA shall
state whether the applicant will have the mitigation measures in place at the time of occupancy of
the properties, or if a financial commitment is in place to complete the necessary infrastructure
within a reasonable length of time from the approval date of the development.
10. On-Site Plannin~ and Parkin~ Principles.
10.1 The TIA shall show:
10.1.1 How off-site roadway improvements are integrated with on-site
circulation patterns;
10.1.2 Driveway traffic volumes, both in terms of queuing space and
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distributing automobiles to and from parking spaces, pick-up/drop-off points, and
drive-through lanes;
10.1.3 Pedestrian linkages to transit stops, parking facilities, building
entrances, and between buildings.
10.2 Access Points. For all access points within and abutting the study area, the
TIA shall show:
10.2.1 The number of lanes;
10.2.2 Storage and stacking area;
10.2.3 Signing and striping;
10.2.4 Provisions for pedestrian interaction;
10.2.5 Spacing from adjacent street and driveway intersections;
10.2.6 If the driveway is to be signalized, a signal progression analysis;
10.2.7 A driveway capacity analysis, available gap check, and/or lane
adequacy check for each driveway;
10.2.8 Angles of intersections between two-way driveways and adjacent
right-of-way;
10.2.9 The capacity of on-site intersections; and
10.2.10 Sight distance.
10.3 Vehicular Oueuing and Storage. For all access points within and abutting the
study area, the TIA shall show:
10.3.1 Provisions for vehicular-exit queuing, including estimates of queue
lengths that need to be accommodated at signalized intersections;
10.3.2 The procedures to be used for determining on-site queuing storage,
and
10.3.3 The procedures for determining the length of off-site left-turn and/or
right-turn lanes.
10.4 Service and Delivery Vehicles. The TIA shall show for all horizon years:
10.4.1 Turning paths for access points anticipated to be used by service
vehicles;
10.4.2 The separation between external and internal circulation roads for
queuing of large vehicles on entry or exit.
11. Impacts to Lane County. If the study area includes or abuts a street within the
jurisdiction of Lane County, the applicant shall include materials that demonstrate how the proposed
improvements address the structural capacity of the street in the County's jurisdiction and address
identified structural deficiencies, or reduction in the useful life of existing street structures related
to the proposed development. Improvements may be needed to eliminate the identified structural
deficiencies and to accommodate vehicle impacts to structures.
R-9.8650-G Traffic Impact Analysis (TIA) - Compliance with Other Standards.
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The applicant shall include in the TIA sufficient information to show the proposed
development is in compliance with applicable development standards of the Eugene Code, 1971,
including, but not limited to:
1. Parking. Adequate parking will be provided to meet site-generated demands, in
accordance with the specific dimensions, parking angles, and parking ratio requirements that are
contained in the Eugene Code, 1971.
2. Pedestrian. Transit Bicycle. and Handicapped Facilities. The site plans for the
development proposal must reflect that applicable provisions have been incorporated to ensure
compliance with design standards for the provision of public transportation, pedestrian, and bicycle
facilities as required by provisions of the Eugene Code, 1971 and other adopted design standards.
Dated and effective this 1S- day of June, 2002.
/C-- ~~ Ie t1~-
t ~ames R. Carlson
- City Manager pro tern
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Exhibit A
to
Standards for Traffic Impact Analysis
Administrative Rule R-9.8650
Traffic Impact Analysis/Traffic Impact Study Format
Address
Date
Land Use Application #
Building Permit #
Project Description:
Project Name
Map/Tax Lot #
Site Size (s.f.)
Existing Access( es )-# and width
Land Use
Horizon Year (full buildout)
Analysis Period:
Weekday PM Peak
Weekday AM Peak
Weekday Noon Peak
Saturday 2PM Peak
Other
Trip Generation Requirements
Trip Distribution Requirements
Scope of Analysis or Study (Software required, background traffic growth factors, etc.)
Intersections to be analyzed:
1.
2.
3.
4.
5.
Accident Study/Collision Diagram Required:
Traffic Signal Warrant Analysis Required?
Yes
No
Special Requirements of Study (Truck turning radius diagrams, internal circulation
analysis, driveway stacking and operations, movement restrictions, median treatment)
TIAffISFormat.wpd 2002
Exhibit B
to
Standards for Traffic Impact Analysis
Administrative Rule R-9.8650
Traffic Impact Analysis (TIA) - Reference Materials.
The following reference materials may be utilized by the City and applicants in the
review and preparation of reports hereunder:
.
Institute of Transportation Engineers. Traffic Access and Impact Studies for Site
Development. Washington, D.C.: ITE, 1991.
.
Federal Highway Administration. Manual on Uniform Traffic Control Devices.
Washington, D.C.: U.S. Department of Transportation, 1988. (Updated
periodically. Washington State has its own adopted supplemental documents that
are applicable under State law.)
.
Institute of Transportation Engineers. Guidelines for Driveway Location and
Design. Washington, D.C.: ITE, 1987.
.
PRC Voorhees. Managementfor Streets and Highways. Washington, D.C.: U.S.
Department of Transportation, 1982, p. 113.
.
Stover, Vergil and Frank Koepke. Transportation and Land Development.
Washington, D.C.: Institute of Transportation Engineers, 1987.
.
American Association of State Highway and Transportation Officials. A Policy on
the Geometric Design of Highways and Streets. Washington, D.C.: AASHTO,
1990.
.
Institute of Transportation Engineers. Transportation and Traffic Engineering
Handbook. Wolfgang Homburger, ed. Washington, D.C.: ITE, 1982, p. 536.
.
Transportation Research Board. Parking Principles. Special Report 125.
Washington, D.C.: TRB, 1971.
.
Institute of Transportation Engineers. Parking Generation.. 2nd ed.Washington,
D.C.: ITE, 1987.
.
Urban Land Institute and National Parking Association. Dimensions of Parking.
2nd ed. Washington, D.C.: ULI, 1983.
Exhibit B-1
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· Wilbur Smith & Associates. Parking Requirements for Shopping Centers.
Washington, D.C.: ULI, 1982.
· Institute of Transportation Engineers. Guidelines for Planning and Assigning
Access Systems for Shopping Centers. Washington, D.C.: ITE, 1975.
Exhibit B-2
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