(A) The purpose of this section is to assist in determining compliance with § 660-012-0045(2) of the state’s Transportation Planning Rule that requires the city to identify potential traffic impacts and apply conditions to development proposals to minimize certain impacts and protect transportation facilities.
(B) 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.
(1) When a traffic impact study is required. The city or other authority with jurisdiction over an affected roadway may require a traffic impact study (TIS) as part of an application for development, a change in use or a change in access. A TIS may shall be required when a land use application involves one or more of the following actions:
(a) A change in zoning or a plan amendment designation;
(b) Any proposed development that the road authority determines will have adverse operational or public safety impacts to the facility;
(c) An increase in site traffic volume generation by 300 average daily trips (ADT) or more;
(d) An increase in site traffic volume of a particular movement to and from the state highway by 20% or more;
(e) An increase in use of adjacent streets by vehicles exceeding the 20,000 pound gross vehicle weights by ten vehicles or more per day;
(f) The location of an access driveway does not meet minimum sight distance requirements, or is located where vehicles entering or leaving the property are restricted, or vehicles leaving or entering the property will queue or hesitate on the state highway, creating a safety hazard; or
(g) A change in internal traffic patterns that may cause safety problems, such as back up onto a street or greater potential for traffic accidents.
(2) Traffic impact study preparation. A traffic impact study shall be prepared by a professional engineer in accordance with the requirements of the road authority. If the road authority is the state’s Department of Transportation (ODOT), consult ODOT’s regional development review planner and OAR Chapter 731, Division 15.
(3) City street improvement requirements. In addition to street improvement requirements in this code for new development, see §§ 155.625 through 155.637 and 155.650 through 155.657 of this chapter for street improvement requirements related to residential and commercial and industrial developments and expansions.
(Prior Code, § 16.170.015) (Ord. 427, passed 5-16-2016; Ord. 435, passed 12-5-2016; Ord. 445, passed 5-15-2017; Ord. 451, passed 6-4-2018; Ord. 467, passed 1-21-2020)