Los Angeles County Traffic Study Guidelines Section 4.3.2. - Screening Criteria
Los Angeles County Traffic Study Guidelines Section 4.3.2.1. - Development Projects
If the answer is yes to the following questions, further analysis may be required to assess whether the project would negatively affect residential streets:
- Is the project required to submit a Transportation Impact Analysis?
- Does the development project involve a discretionary action that would be reviewed by the Department of Regional Planning?
In addition, for development projects to which all of the following circumstances apply, select local residential street segments for analyses during the transportation assessment scoping process:
- The project is located along a current Limited Secondary, Secondary, Major, Parkway, Expressway per the County’s General Plan and the study intersections under project build-out conditions (as determined in Section 4.1) operate at a peak hour LOS E or LOS F.
- The project has a potential, based on connectivity to the roadway network, to add automobile traffic to the alternative local residential street route(s) during peak hours,
- An alternative local residential street route (defined as local streets as designated in the County’s General Plan passing through a residential neighborhood) provide motorists with a viable alternative route. A viable alternative local residential street route is defined as one which is parallel and reasonably adjacent to the primary route as to make it attractive as an alternative to the primary route. The project applicant in consultation with Public Works shall define which routes are viable
alternative routes, based on, but not limited to, features such as geography and presence of existing traffic control devices, and other criteria as determined by Public Works.
For the purpose of screening for daily vehicle trips, a proposed project’s daily vehicle trips should be estimated using the most recent edition of the ITE Trip Generation Manual. If the project proposed land use is not listed in the ITE Trip Generation Manual, please submit a trip generation study to Public Works for review and approval.
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