G6-TRAFFIC IMPACT ASSESSMENT Flashcards
is a valuable tool for assessing potential impacts of traffic generated by a proposed development to the surrounding transportation system.
TRAFFIC IMPACT ASSESSMENT (TIA)
used for larger development with significant traffic impacts or at complex location where the recommended improvements require a detailed analysis.
COMPREHENSIVE REPORT
may be used for small development with low traffic impacts at simple location where the recommended improvements can be assessed in a memo format.
MEMO REPORT
Assessing of Traffic Impact of a New Development Project
-Defining Scope
-Collect Data
-Analyze Existing Conditions
-Forecast Future Conditions
-Recommend Mitigation Measures
To avoid any unnecessary work, a scoping meeting with both the municipality and DPWH staff would be helpful to discuss about the proposed development plan, any future highway and municipal plans, existing and proposed access locations, access management, setback requirements, expectations, etc. to determine whether a TIA is required or not, and the scope of the study for the upcoming TIA.
PROJECT SCOPING
Defining the Scope
- Study Area
- Time Horizon
- Scenarios
- Performance Measures
It is to provide a short synopsis of the key findings, conclusions and recommendations.
EXECUTIVE SUMMARY
The introduction of background information is to provide an understanding of the proposed development and its location with respect to the provincial highway system.
INTRODUCTION AND PROPOSED DEVELOPMENT INFORMATION
The TIA report should provide the reviewer a full understanding of the study area.
ACCESS MANAGEMENT, HIGHWAY AND MUNICIPAL PLANS
The report should provide a description of the existing transportation system and its condition within the study area, emphasizing the major travel routes to and from the site.
EXISTING INFRASTRUCTURE CONDITIONS
This section determines the background traffic volumes that will be used in the analysis of the proposed development.
BACKGROUND TRAFFIC
Traffic projections generated by other nearby proposed/planned developments should be taken into account.
Traffic Generated by Other Developments
This section determines the background traffic volumes that will be used in the analysis of the proposed development.
TRAFFIC CONDITIONS
Once the development traffic has been identified, the projected background traffic, other developments traffic and site generated traffic should be combined for the determined peak periods, and the combined traffic should be projected to at least the 10-year and 20-year horizons from the commencement day of each development stage.
COMBINED TRAFFIC
Arranging traffic projections in chronological order and presenting them in tables and turning movement diagrams in a clear and concise manner will be a great help in the review process.
SUGGESTED TRAFFIC LAYOUT
are criteria used to determine whether specific traffic control measures or modifications are warranted at intersections to address the safety, traffic flow or other concerns.
Intersection treatment warrants
refers to the assessment of the maximum ability of transportations system such as roads, intersections or highways to handle traffic within a given time frame.
CAPACITY ANALYSIS
The TIA should identify, discuss, and describe the need for the recommended traffic control treatments necessary to manage and regulate traffic effectively in a given area.
TRAFFIC CONTROL NEEDS
Safety of all road users (including vulnerable road users where applicable) must be taken into consideration during the preparation of the TIA.
TRAFFIC SAFETY
Lighting warrants does not indicate an absolute requirement but rather a trigger for consideration.
ILLUMINATION WARRANT ANALYSIS
Pedestrian movement accommodation is an important issue in the urban and semi-urban areas
PEDESTRIAN WARRANT ANALYSIS
An assessment of design vehicle requirements is a critical phase of the TIA and must not be overlooked.
DESIGN VEHICLE ACCOMODATION
TIA report must address improvements to the highway involving removal, relocation or alternation of existing accesses to maintain minimum spacing and ensure highway safety under post-development conditions.
Access Management and Rights-of-Way
It is the movement of vehicles, ships, persons, etc., in an area, along astreet, through an air lane, over a water route, etc.
TRAFFIC
