G6-TRAFFIC IMPACT ASSESSMENT

Question 1

is a valuable tool for assessing potential impacts of traffic generated by a proposed development to the surrounding transportation system.

Answer 1

TRAFFIC IMPACT ASSESSMENT (TIA)

Question 2

used for larger development with significant traffic impacts or at complex location where the recommended improvements require a detailed analysis.

Answer 2

COMPREHENSIVE REPORT

Question 3

may be used for small development with low traffic impacts at simple location where the recommended improvements can be assessed in a memo format.

Answer 3

MEMO REPORT

Question 4

Assessing of Traffic Impact of a New Development Project

Answer 4

-Defining Scope
-Collect Data
-Analyze Existing Conditions
-Forecast Future Conditions
-Recommend Mitigation Measures

Question 5

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.

Answer 5

PROJECT SCOPING

Question 6

Defining the Scope

Answer 6

1. Study Area
2. Time Horizon
3. Scenarios
4. Performance Measures

Question 7

It is to provide a short synopsis of the key findings, conclusions and recommendations.

Answer 7

EXECUTIVE SUMMARY

Question 8

The introduction of background information is to provide an understanding of the proposed development and its location with respect to the provincial highway system.

Answer 8

INTRODUCTION AND PROPOSED DEVELOPMENT INFORMATION

Question 9

The TIA report should provide the reviewer a full understanding of the study area.

Answer 9

ACCESS MANAGEMENT, HIGHWAY AND MUNICIPAL PLANS

Question 10

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.

Answer 10

EXISTING INFRASTRUCTURE CONDITIONS

Question 11

This section determines the background traffic volumes that will be used in the analysis of the proposed development.

Answer 11

BACKGROUND TRAFFIC

Question 12

Traffic projections generated by other nearby proposed/planned developments should be taken into account.

Answer 12

Traffic Generated by Other Developments

Question 13

This section determines the background traffic volumes that will be used in the analysis of the proposed development.

Answer 13

TRAFFIC CONDITIONS

Question 14

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.

Answer 14

COMBINED TRAFFIC

Question 15

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.

Answer 15

SUGGESTED TRAFFIC LAYOUT

Question 16

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.

Answer 16

Intersection treatment warrants

Question 17

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.

Answer 17

CAPACITY ANALYSIS

Question 18

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.

Answer 18

TRAFFIC CONTROL NEEDS

Question 19

Safety of all road users (including vulnerable road users where applicable) must be taken into consideration during the preparation of the TIA.

Answer 19

TRAFFIC SAFETY

Question 20

Lighting warrants does not indicate an absolute requirement but rather a trigger for consideration.

Answer 20

ILLUMINATION WARRANT ANALYSIS

Question 21

Pedestrian movement accommodation is an important issue in the urban and semi-urban areas

Answer 21

PEDESTRIAN WARRANT ANALYSIS

Question 22

An assessment of design vehicle requirements is a critical phase of the TIA and must not be overlooked.

Answer 22

DESIGN VEHICLE ACCOMODATION

Question 23

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.

Answer 23

Access Management and Rights-of-Way

Question 24

It is the movement of vehicles, ships, persons, etc., in an area, along astreet, through an air lane, over a water route, etc.

Answer 24

TRAFFIC

Question 25

It is defined as the average speed of all the vehicles passing a point on a highway over some specified time period.

Answer 25

TIME MEAN SPEED

Question 26

It is defined as the average speed of all the vehicles occupying a given section of a highway over some specified time period.

Answer 26

SPACE MEAN SPEED

Question 27

The number of vehicles that pass a point on the roadway (sometimes per lane) during a specific time interval.

Answer 27

FLOW

Question 28

The number of vehicles occupying a given length of roadway at some specified time.

Answer 28

DENSITY

Question 29

It is a mathematical model that formulates the relationships among traffic flow characteristics like density, flow, mean speed of a traffic stream, etc.

Answer 29

MACROSCOPIC TRAFFIC FLOW MODEL

Question 30

This model attempts to analyze the flow of traffic by modeling driver-driver and driver-road interactions within a traffic stream.

Answer 30

MICROSCOPIC TRAFFIC FLOW MODEL

Question 31

It is defined as roadway obstruction caused by overcrowding of vehicles due to inadequate supply of road infrastructure, excessive travel demand, or poor flow of transportation modes.

Answer 31

TRAFFIC CONGESTION

Question 32

The average 24-hour traffic volume at a given location over a full 365-day year, Le. the total number of vehicles passing the site in a year divided by 365.

Answer 32

AVERAGE ANNUAL DAILY TRAFFIC (AADT)