Ensure safe ingress to and egress from the site;

Maintain adequate road capacity on the local, County and State road system to accommodate all traffic to and from the site generated by the project;

Ensure safe and reasonable traffic operating conditions on roads and at intersections through which traffic to and from the site passes;

Avoid creation of, or mitigate, unsafe and hazardous traffic conditions from heavy weights of trucks traveling to and from the site;

Minimize the impact of nonresidential traffic on residential neighborhoods in the County;

Protect the substantial public investment in the existing road system;

Provide a basis for approving, modifying, or denying an application based upon the adequacy or deficiency of the local, County and State road systems to handle the needs generated by the project;

If applicable, after identifying any deficiency in road capacity as required by Section 6.6.3.2 of the SLDC, determine, after taking into consideration improvements to be provided through development fees, improvements to be provided by the County through the mechanisms described in the CIP and through the mechanisms described in a voluntary development agreement or through an Improvement District how all infrastructure that is required will be provided;

Evaluate whether adequate traffic capacity exists or will be available at the time a development order is granted for the application to safely and conveniently accommodate the traffic generated by the project on the local, County and State road system;

Evaluate traffic operations and impacts at site access points under projected traffic loads;

Evaluate the impact of site-generated traffic on affected intersections in the County;

Evaluate the impact of site-generated traffic on the safety, capacity and quality of traffic flow on public and private roads within the County;

Evaluate the impact of the proposed project on residential roads from the traffic to and from the site;

Ensure that site access and other improvements needed to mitigate the traffic impact of the development utilize County and State accepted engineering design standards and access management criteria;

Ensure that the proposed road layout is consistent with the public roadway design standards;

Ensure the proper design and spacing of site access points and identify where limitations on access should be established;

Ensure that potential safety problems on all roads to be used within the County have been properly evaluated and addressed; and

Ensure that internal circulation patterns will not interfere with traffic flow on the existing County and State road system.

See § 6.6.4 Traffic Service Standards.

Contents.
A traffic impact assessment shall contain the following information:
 

Site Description.
Illustrations and narratives that describe the characteristics of the site and adjacent land uses as well as future development projects for all transportation to and from the site to the nearest state road or interstate. A description of potential uses and traffic generation to be evaluated shall be provided. A description of the proposed development project, including access and staging plans shall be provided.

Study Area.
The study area shall identify the roadway segments, and all intersections of roads classified as subcollector or larger and access points for all transportation routes from the site to the nearest state road or interstate.

See § 6.653 ExistingTraffic Conditions.
See § 6.654 HorizonYear(s) and Background Traffic Growth.
See § 6.655 Trip Generation, Reduction, and Distribution.
 

Traffic Assignment.
The projected design-hour traffic volumes for roadway segments, intersections, or driveways in the study area, with and without the proposed development, for the horizon year(s) of the study.
 

Impact Analysis.
The impact of traffic volumes of the projected horizon year(s) relative to each of the applicable traffic service standards and identification of the methodology utilized to evaluate the impact. The weekday peak-hour impact shall be evaluated as well as the Saturday peak hour for those uses exhibiting high levels of weekend traffic generation.

See § 6.658 Mitigation/Alternatives.
 

If the applicant fails to advance the improvements in accordance with Chapter 12, the application for the development approval may be denied for lack of adequate transportation system capacity, safety, and design.

At a minimum, the applicant shall be required, at the time of development approval, to pay for applicant’s roughly proportional share of the cost for construction, operation and maintenance of all roads in the CIP for transportation facilities for the area in which development project is located. If such roughly proportional share is insufficient to meet traffic adequacy, the applicant may, through a voluntary development agreement, voluntarily advance the cost of additional roadway system improvements and shall be reimbursed when and as additional development projects are approved.

See § 6.6.6 Traffic Impact Assessment Findings.