Transportation System Plan 2018-2038
Medford · Page 190 of 398 · Adopted 2018-12-06
problem s. The process should be undertaken annually in conjunction with the City ’s budgeting cycle to
ensure that the highest priority projects can be identified and funded. A traffic calm ing program would
address only non-arterial or collector streets and w ould not be im plem ented on either County roads or
state highway s.
Step 1 (Petitioners and City ): Determine eligibility . Following subm ission of a request, staff determ ine
eligibility . Criteria that have been used elsewhere to determ ine eligibility of a street for traffic calm ing-
type im provem ents include such factors as:
• The street has a posted speed of 30 m ph or less
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• The street has a functional classification of m inor collector or lower
Step 2: (Petitioners): Collect support. An initial ballot identify ing the problem s and potential traffic
calm ing solutions should be distributed and collected fro m all residences on the affected street or nearby
parallel streets which m ay be im pacted by installation of traffic calm ing devices. In order to be advanced
to the City Council, a m ajority of affected residents m ust favor traffic calm ing.
• Locate traffic calm ing devices at an adequate distance from intersections, driveway s and
horizontal curves, considering sight distance, tu rning m ovem ents and other constraints. Avoid
installing traffic calm ing devices on slopes greater than five percent to the extent possible, and do
not install devices on slopes greater than eight percent.
• 85 percent of daily traffic on the street exceed the posted speed lim it by 5 m ph OR cut-
through traffic is at least 25 percent of all traffic based survey data
Alternate prim ary emergency response routes are available
The street has no m ore than two lanes
Step 3: (City and/or Designated Committee/Board): Prioritize requests. A citizen group such as a
Traffic Com mission or other body evaluates and prioritizes proposed traffic calm ing projects. Priority is
established based on factors including existing traffic volum es and 85th percentile speeds, availability of
alternate em ergency vehicle routes, potential for nega tive impacts on adjacent streets (prim arily traffic
diverted from the subject street), and how effectiv ely the identified problem (s) can be resolved through
the use of traffic calm ing techniques.
Step 4: (City Staff): Ev aluate Problem and Determ ine Appropriate Solution(s). Evaluate data and
field conditions and design a proposed traffic calm ing project. Staff should incorporate the following
guidelines in developing the project:
• Provide an avenue for ongoing public input.
• Involve experts fam iliar with the latest tra ffic calm ing resources and design standards, through
either direct involvem ent as consultants or advi sors, or review of the literature by staff.
• Consider a variety of devices, rather than relying on one ty pe of device such as speed hum ps or
traffic circles. Reinforce the understanding that stop signs are not appropriate traffic calm ing
devices.
• Support multiple objectives, including enhanced st reet aesthetics, im proved walking and cy cling
conditions, as well as m aintaining appropriate traffic speeds.
New devices should be im plem ented on a trial basis with adequate signing. For exam ple, the first
traffic circles in an area should have signs show ing the path vehicles should follow. After a few
years such signs becom e unnecessary .
• Avoid traffic calm ing devices that will reduce speeds by more than 15 m ph. As an exam ple, if
the 85th percentile speed is greater than 35 m ph, devices with 20 m ph design speeds – such as 14-
foot speed hum ps – should not be used.
Step 5: (City Council): Project Approv al. Final approval of the recom mended project and authorization
of funding for im plem entation.
Medford Transportatio n System Pl an 8-8 Public Transportation Plan
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