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Evaluation
  Site Impact Analysis

>> Projects Requiring a Site Impact Analysis
>> Projects Requiring a Simplified Application

In order to manage and maintain the safety and integrity of existing and future highways, it is essential to assess the amount of new traffic entering the highways from adjacent developments, and to design thoughtfully the access and layout configuration of the developments. Within the context of provincial, regional, corridor and local plans, a Site Impact Analysis evaluates alternative access possibilities and provides information which will help determine the acceptability of proposed access points. Complete information is available in the Site Impact Analysis Review Manual. The main points are summarized on this page.

Using the Site Impact Analysis Study, Ministry staff can:

  • Determine the contribution a particular site or group of sites makes to the roadway system traffic loads
  • Identify roadway improvement requirements attributable to a particular project
  • Assess compatibility with local, regional and provincial transportation plans
  • Evaluate alternative access possibilities
  • Determine the acceptability of proposed access points

Site Impact Analyses also help ministry staff to design or approve:

  • additional travel lanes or separate turn lanes on the highway
  • on-site storage lengths
  • the internal layout of parking

Study Review

The Site Impact Analysis Requirements Manual provides guidance on how the need for a study is determined. Ministry staff will determine whether a detailed Site Impact Analysis Study must be submitted in support of the application or whether a Simplified Application Review Process may be followed.

The three main components of the process for undertaking a Site Impact Analysis Study include:

  • Determining the need for a detailed Site Impact Analysis Study
  • Determining the required components of a study
  • Detailed study review process and simplified study review process

The following is a list of some of the situations when the Ministry may request a detailed or simplified Site Impact Analysis Study:

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Projects Requiring a Site Impact Analysis

Detailed Site Impact Analysis Study Warrants

Due to the diversity of the types and locations of developments in British Columbia, ministry staff must consider detailed study warrants at both the general provincial level and at the site-specific level.

In general, a site which has an estimated trip generation rate of 100 or more two-way trips, (i.e. inbound plus outbound) during the peak hour requires a detailed Site Impact Analysis Study.

The applicant may be required to reconstruct, relocate or close the access to conform to the highway operational requirements if a change in use of the property results in a change in the type or nature of access operation.

There may be other site specific factors which Ministry staff must consider in determining whether to require a detailed Site Impact Analysis Study for a proposed development which has an estimated trip generation rate below 100 peak hour trips, including:

  • Environmentally sensitive areas where road widening may be required
  • High accident areas
  • Currently congested areas
  • Regional planning or corridor planning areas

For this reason, before submitting an application please consult with the District Office to determine whether a study is required. District and regional staff will determine whether these or any additional issues affect the warrant for a study for a specific site.

If the District Development Technician determines the need for a detailed Site Impact Analysis Study, a Proposed Study Terms of Reference must be submitted. This is available in Appendix A of the Site Impact Analysis Review Manual.

The requirement on the applicant differs depending on the size of the development. If a development may produce more than 100 vehicles per hour, then the applicant will be required to do a Detailed Study. If it is smaller than this, the applicant will be advised whether the Simplified Application Review Process applies or whether the project requires a Detailed Study. Some examples of developments that produce 100 trips per hour are:

  • 100 houses
  • 150 condominium units
  • 900 square meters of commercial development
  • 5,260 meters of general office building
  • 150 square meters of fast food/drive-through
  • 130 hotel rooms

A general four-step process is listed below. Throughout the application process, access, safety, and through-traffic needs are the most important issues assessed by the Ministry.

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Projects Requiring a Simplified Application

In some cases, Ministry staff will use a "Simplified Application" to evaluate traffic impacts of a proposal, instead of a full-scale Site Impact Analysis. This tends to be the case when:

  • The estimated peak hour trip generation rate is below 100
  • Safety issues are not a big factor

This simplified process has been established in the Site Impact Analysis Requirements Manual for sites which are not expected to have a high impact on the road network that they will connect to. The District Transportation Office will outline any required information on a checklist.

The applicant submits the application and the required information to the District Office.

If the application and attached information are acceptable to Ministry staff:

  • The applicant will be notified of the conditions of approval
  • If the applicant agrees to the conditions of approval specified for the site, then they must forward a letter indicating their acceptance to the District Office.

If the application and its attachments are not acceptable:

  • The study will be returned to the applicant stating the reasons why the study was not accepted.

All submitted materials become the property of the ministry.

Once the applicant has submitted a letter of agreement to the conditions of approval, the applicant can complete the application process. The applicant must follow the construction process below, to ensure that any construction on Ministry right-of-way is completed according to Ministry standards and specifications.

In addition to the information provided on this website and the Site Impact Analysis Requirements Manual the Ministry's district office staff can provide a any information you may required for these applications.

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