The purpose of this chapter of the Warrenton Development Code is to implement Section 660-012-0045(2)(e) of the State Transportation Planning Rule that requires the City to adopt a process to apply conditions to development proposals in order to minimize impacts and protect transportation facilities (see Section 16.256.060). This chapter establishes the standards for when a proposal must be reviewed for potential traffic impacts; when a traffic impact study must be submitted with a development application in order to determine whether conditions are needed to minimize impacts to and protect transportation facilities; what must be in a traffic impact study; and who is qualified to prepare the study.
(Ord. 1225 § 13, 2019)
Average daily vehicle trips shall be calculated using the rates
and methodology in the most recent addition of the Institute of Transportation
Engineers Trip Generation Manual.
(Ord. 1225 § 13, 2019)
A traffic impact study will be required to be submitted to the
City with a land use application, when the following conditions apply:
A.
The
development application involves a change in zoning or a plan amendment
designation; or,
B.
The
development shall cause one or more of the following effects, which
can be determined by field counts, site observation, traffic impact
analysis or study, field measurements, crash history, Institute of
Transportation Engineers Trip Generation Manual; and information and
studies provided by the local reviewing jurisdiction and/or ODOT:
1.
An increase in site traffic volume generation by 300 average daily
trips (ADT) or more; or
2.
An increase in ADT hour volume of a particular movement to and from
the state highway by 20% or more; or
3.
An increase in use of adjacent streets by vehicles exceeding the
20,000 pound gross vehicle weights by 10 vehicles or more per day;
or
4.
The location of the access driveway does not meet minimum sight distance
requirements, or is located where vehicles entering or leaving the
property are restricted, or such vehicles queue or hesitate on the
state highway, creating a safety hazard; or
5.
A change in internal traffic patterns that may cause safety problems,
such as back up onto the highway or traffic crashes in the approach
area.
(Ord. 1225 § 13, 2019)
A.
Preparation.
A traffic impact study shall be prepared by a professional engineer
registered in the State of Oregon. The study scope and content shall
be determined in coordination with the City Public Works Director
or designee. Traffic impact analyses required by Clatsop County or
ODOT shall be prepared in accordance with the requirements of those
road authorities. Preparation of the study report is the responsibility
of the land owner or applicant.
B.
Transportation Planning Rule compliance, Section 16.232.060.
(Ord. 1225 § 13, 2019)
The traffic impact study report shall be reviewed according
to the following criteria:
A.
The
study complies with the content requirements set forth by the City
and/or other road authorities as appropriate;
B.
The
study demonstrates that adequate transportation facilities exist to
serve the proposed land use action or identifies mitigation measures
that resolve identified traffic safety problems in a manner that is
satisfactory to the road authority;
C.
For
affected City facilities, the study demonstrates that the project
meets mobility and other applicable performance standards established
in the adopted transportation system plan, and includes identification
of multi-modal solutions used to meet these standards, as needed;
and
D.
Proposed
design and construction of transportation improvements are in accordance
with the design standards and the access spacing standards specified
in the transportation system plan.
(Ord. 1225 § 13, 2019)
A.
The
City may deny, approve, or approve a proposal with conditions necessary
to meet operational and safety standards; provide the necessary right-of-way
for planned improvements; and require construction of improvements
to ensure consistency with the future planned transportation system.
B.
Construction
of off-site improvements may be required to mitigate impacts resulting
from development that relate to capacity deficiencies and public safety;
and/or to upgrade or construct public facilities to City standards.
C.
Where
the existing transportation system is shown to be impacted by the
proposed use, improvements such as paving; curbing; installation of
or contribution to traffic signals; and/or construction of sidewalks,
bikeways, access ways, paths, or streets that serve the proposed use
may be required.
D.
Improvements
required as a condition of development approval, when not voluntarily
provided by the applicant, shall be roughly proportional to the impact
of the development on transportation facilities. Findings in the development
approval shall indicate how the required improvements directly relate
to and are roughly proportional to the impact of development.
(Ord. 1225 § 13, 2019)
