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Traffic Monitoring Program Needs and Funding Sources

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Highway Information Seminar
  Tuesday, November 15, 2011
  1:00 p.m. to 2:30 p.m.
  Room – Washington #1

Tianjia Tang, PE, Tianjia.Tang@DOT.GOV
Chief, Travel Monitoring and Surveys, Office of Highway Policy Information
FHWA, 1200 New Jersey Avenue, Washington, DC 20590

Objective

The goal of this session is to familiarize ourselves with all the factors involved in traffic monitoring and help us to think bigger and act faster in order to meet all the challenges we are faced with.

 

Outline

  • Organizational Structure
  • Roles We Play
  • People, Equipment, Technology…
  • Examples of Traffic Data Usage
  • Funding Sources

 

The objective of this part is to help us to understand and know where our profession stands in our organization

 

State of California Department of Transportaiton Stepember 2010 Organization Chart. Circled: Traffic Operations –  Robert Copp and Transportation Planning - Sharon Scherziner (Interim)

 

Organizational Structure Unit Names

  • Intermodal Development
  • Pre-construction
  • Modal Planning
  • Safety and Operations
  • Traffic Operations
  • Engineering and Operations
  • System Operations
  • Transport and Mobility
  • Operations and Maintenance
  • ….
  • Other terms:
  • office, division, team, branch, bureau, unit…

 

Your Task

  1. Locate your organizational Structure
  2. Identify how you are related to your organization
  3. Identify how your program contribute or is related to other units, divisions, and offices

 

Organizational Structure

Know where you are and how you are related to other offices and divisions from an organization standpoint.

 

Roles We Play

The objective of this component is to help us to recognize key topics/programs where our data are used for.

 

Roles We Play Data Radial Cycle Data Construction Operations Planning PE/NEPA Final Design R/W

 

Roles We Play

Blue Circle: Planning


    needs and condition assessments


 
  • Traffic data — AADTT, AADTT, K, D, F…
  • Transportation improvement Program (TIP) and Statewide Transportation Improvement Program (STIP)
  • Travel Demand Modeling – model buildup and calibration
  • # of travel lanes needed Congestion level – both existing and future conditions
  • ….

 

Roles We Play

Green Circle with PE/NEPA


    Preliminary Engineering and National Environmental Policy Act


 
  • Traffic data — AADTT, AADTT, K, D, …
  • # of travel lanes needed
  • # congestion level – both existing and future conditions
  • Pavement design – truck data
  • Lane width Curvature
  • Grade
  • highway noise (TNM) – AADTT, peak hour factor, truck data
  • Air Quality (MOVES…)

 

Roles We Play

Green Circle with PE/NEPA


    Preliminary Engineering and NEPA


 
  • Traffic data — AADT, AADTT, K, D, …
  • # of travel lanes needed
  • congestion level – both existing and future conditions
  • pavement design – truck data
  • lane width
  • Curvature
  • grade ….
  • project level conformity determination ( air quality)
  • Final noise wall design and refinement ( if applicable)

 

Roles We Play

Orange Circle with RW


    Right of Way


 

Project needs and justification from a traffic standpoint in the event of litigation or any court proceeding.

 

Roles We Play

Gray Circle with Construction


    Construction


 

Maintaining traffic during construction – one of the most challenging aspect of upgrading existing roadway facilities

 

Roles We Play

Blue Circle with Operations


    Construction


 
  • Signal timing, optimization and synchronization
  • Turn lane needs assessment – special counts
  • Traveler's information system (ITS)
  • Safety/Performance – speed
  • ….

 

Review – Roles We Play

Review - Roles We Play Radial Cycle

Construction R/W Operations Data Final Design PE/NEPA Planning

 

People, Equipment, Technology …

The objective of this component is to recognize both the human and none human factor issues involved in traffic monitoring.

 

People and Skill

  • Professional engineering (PE) – what is the State regulation? Can none PE approve design traffic studies?
  • American Institute of Certified Planners (AICP) – any preference or requirements?
  • GIS and other traffic data analysis knowledge
  • Software programmer Statistics and/or other data analysis experience
  • Electricians
  • ….

 

Equipment and Technology

  • Roadway facility based technology – both intrusive and none intrusive – loop, camera …
  • Vehicle based technology – GPS, cell phone triangulation …

 

Funding and other Resources

  • Doing more and getting more
  • Demonstrate value

 

People, Equipment, Technology …

To make our business a successful one, we must know ourselves and our partners and have a good productive relationship with all involved.

Relationship building is just as important as technically know how.

 

Review — People, Equipment, Technology …

  • People – Engineer, Planner, Software Programmer, Modelers, Analysts …
  • Equipment – Infrastructure based vs. none-infrastructure based

 

Traffic Data usage examples

The objective of this component is to recognize some of the key program and products where traffic data are vital to their success.

 

Traffic Data usage examples

Travel Demand Modeling – Planning Offices and MPOs

Modeling software examples:
Cube, TransCAD, EMME/2 ….

Exactly what type of traffic counting data are used:
Link volume, base year AADT, D, K …

What the counting data are used for:
Model calibration and validation, Level of Services, facility needs …

 

Traffic Data usage examples

Air Quality Analysis – Environmental Offices and MPOs

Modeling software examples:
Mobile6 and MOVES

Exactly what type of traffic counting data are used:
Link volume, vehicle class, speed, turning movements for signalized intersections

What the counting data are used for:
To obtain emission factors for various pollutants (CO, PM, NOx, VOC … mg/mile or mg/hour)

 

Traffic Data usage examples

Highway Noise Analysis – Environmental Offices

Modeling software examples:
TNM (Traffic Noise Model)

Exactly what type of traffic counting data are used:
Link volume, vehicle class – truck, speed, turning movements for signalized intersections

What the counting data are used for:
Calibrate noise model and to predict highway noise level and determine feasibility of noise abatement

 

Traffic Data usage examples

Roadway Design – Geometric and Pavement Design

Software examples:
Mechanistic Empirical Pavement Design Guide (MEPDG), Highway Capacity Manual (HCM) ….

Exactly what type of traffic counting data are used:
volume, class , speed, turning movements for signalized intersections …

What the counting data are used for:
Pavement – layer structure and thickness optimization Geometric – # o lanes, LOA, grade, Curvature…

 

Traffic Data – Precision and Accuracy

Ask data users the following question in dealing with traffic counting data precision and accuracy issues

What is the accuracy of your projection data?

scale elephan on scale = 2001.1198798 lbs

 

Review — Traffic Data usage examples

  • People – Engineer, Planner, Software Programmer, Modelers, Analysts …
  • Equipment – Infrastructure based vs. none-infrastructure based

 

Federal Funding Sources

The objective of this component is to recognize the main Federal-funding categories where traffic data program can take advantage for potential funding sources.

 

PL and SPR and Funds

  • Metropolitan PL fund: 1.25 percent deduction of five federal construction program allocations: (1.) Interstate Maintenance, (2.) National Highway System, (3.) Surface Transportation Program, (4.) Highway Bridge Replacement and Rehabilitation, and (5.) Congestion Mitigation and Air Quality Improvement.
  • State Planning and Research Fund: 2% Mandatory Set Aside from six State Apportionments

(IM, NHS, STP, CMAQ, Bridge, HSIP)

 

Federal Funding Sources

Apportionment Programs

Interstate Maintenance Program
National Highway System
Surface Transportation Program
Highway Bridge Replacement and Rehabilitation Program
Congestion Mitigation and Air Quality Improvement Program
Highway Safety Improvement Program
Railway-Highway Crossings
Safe Routes to School Program
Recreational Trails Program
Coordinated Border Infrastructure Program
Metropolitan Planning

 

Federal-aid Eligible Roadways

 

Federal-aid Is a Reimbursable Program

23 CFR 470.103

—means highways on the Federal-aid highway system and all other public roads not classified as local roads or rural minor collectors."

  • Designated as major collector and above
    –(STPS, STP, NHS, IM)
  • Certain Bridge and Safety projects off system

 

Federal-aid Is a Reimbursable Program

Federal-aid is a Reimbursable Program flow chart State Receives Authorization State Authorizes Contractor Contractor Does Work State Pays Contractor State Submits Voucher to FHWA FHWA Sends Voucher to US Treasury US Treasury Pays State

 

Review – Federal Funding

PL
SPR
Others

 

Review

  • Organizational Structure
  • Roles We Play
  • People, Equipment, Technology …
  • Examples of Traffic Data Usage
  • Federal Funding

 

Thank You!

Highway Information Seminar

Tianjia Tang, PE, Tianjia.Tang@DOT.GOV
Chief, Travel Monitoring and Surveys, Office of Highway Policy Information
FHWA, 1200 New jersey Avenue, Washington, DC 20590