trb planning applications identifying the long-range transportation improvement and funding needs...

TRB Planning Applications

Identifying the Long-RangeIdentifying the Long-RangeTransportation ImprovementTransportation Improvement

and Funding Needs forand Funding Needs forUrban Areas in TexasUrban Areas in Texas

By By Kevin M. Hall, Texas Transportation InstituteKevin M. Hall, Texas Transportation Institute

Tim Lomax, Ph.D., P.E. Texas Transportation Institute Tim Lomax, Ph.D., P.E. Texas Transportation Institute Greg Lancaster, Texas Department of TransportationGreg Lancaster, Texas Department of Transportation


Identifying Needs and SolutionsIdentifying Needs and Solutions

• Texas Mobility PlansTexas Mobility Plans– Cooperative effort:Cooperative effort:

25 Metropolitan Planning Organizations (MPOs);25 Metropolitan Planning Organizations (MPOs);Texas Department of Transportation (TxDOT);Texas Department of Transportation (TxDOT);Texas Transportation Institute (TTI).Texas Transportation Institute (TTI).

– Develop “Develop “Needs-BasedNeeds-Based” Plans” Plans


What is a “Needs-Based” Plan?What is a “Needs-Based” Plan?

• Extension of current financially Extension of current financially constrained planning process (i.e. MTP’s);constrained planning process (i.e. MTP’s);

• Identifies/addresses unmet needs;Identifies/addresses unmet needs;• Return to “Vision” oriented approach:Return to “Vision” oriented approach:

– Mobility goals that lead to…Mobility goals that lead to…Multimodal corridor solutions, including…Multimodal corridor solutions, including…People and Freight.People and Freight.

• Strategic plan and funding requirements – Strategic plan and funding requirements – not a detailed project list.not a detailed project list.


Mobility Plans and the Texas Mobility Plans and the Texas Congestion Index (TCI)Congestion Index (TCI)

• A process and one of several performance A process and one of several performance measures;measures;

• Estimation techniques to produce the measures Estimation techniques to produce the measures developed from: developed from: – Urban travel demand models; and, based onUrban travel demand models; and, based on– Air quality modeling procedures;Air quality modeling procedures;

• Statewide consistent model and air quality Statewide consistent model and air quality conformity analysis process (TxDOT-TPP).conformity analysis process (TxDOT-TPP).

What is it?What is it?


Texas Congestion IndexTexas Congestion Index

• Examines results with freeways, arterials Examines results with freeways, arterials and transit;and transit;

• Peak period travel (6 AM to 9 AM; 4PM to Peak period travel (6 AM to 9 AM; 4PM to 7PM);7PM);

• Used to measure current and future Used to measure current and future conditions;conditions;

• Can perform “What-If” scenarios;Can perform “What-If” scenarios;

• Open process for user input.Open process for user input.


Texas Congestion IndexTexas Congestion Index• Basis of measurement is:Basis of measurement is:

Value of Time Required for a Trip Value of Time Required for a Trip During Peak Period During Peak Period (6-9 a.m., 4-7 p.m.)(6-9 a.m., 4-7 p.m.)

Value of Time Required for the Same TripValue of Time Required for the Same Tripat Free-Flow Speedsat Free-Flow Speeds


Texas Congestion IndexTexas Congestion Index

• TCI Value of 1.3:TCI Value of 1.3:– Indicates that a peak period trip requires 30 Indicates that a peak period trip requires 30

percent more travel time than the same trip at percent more travel time than the same trip at free flow speeds – or –free flow speeds – or –

– A 20 minute free-flow trip would require 26 A 20 minute free-flow trip would require 26 minutes in the peak.minutes in the peak.


““Needs-Based” TDM ProcessNeeds-Based” TDM Process

• Step 1: MTP assignment;Step 1: MTP assignment;– Capacity restraint assignment;Capacity restraint assignment;– Identifies links exceeding congestion Identifies links exceeding congestion

threshold value.threshold value.

• Step 2: All-or-nothing assignmentStep 2: All-or-nothing assignment– Basis for identifying “needs” and adding Basis for identifying “needs” and adding

capacity;capacity;

• Step 3: Edit links on network exceeding Step 3: Edit links on network exceeding threshold congestion level; threshold congestion level;

5 Steps (Primarily Automated)5 Steps (Primarily Automated)



• Step 4: Mobility assignment;Step 4: Mobility assignment;- - Second capacity restraint assignment. Second capacity restraint assignment.

• Step 5: Determine network and Step 5: Determine network and assignment result differences between assignment result differences between MTP and “Mobility” assignments.MTP and “Mobility” assignments.

ContinuedContinued


““Needs-Based” TDM ProductsNeeds-Based” TDM Products

FacilityFacility

TypeType

DeltaDelta

VMTVMT

DeltaDelta

VHTVHT

Delta LaneDelta Lane

MilesMiles

InterstateInterstate -8,436-8,436 -241-241 00

FreewayFreeway 89,38789,387 1,9071,907 21.49721.497

Prin. Art.Prin. Art. 112,580112,580 2,0112,011 157.62157.62

Minor Art.Minor Art. -272,845-272,845 -6,345-6,345 100.58100.58

Corpus Christi Study Area ExampleCorpus Christi Study Area Example

Note: Summed for all area types.Note: Summed for all area types.


““Needs-Based” TDM ProductsNeeds-Based” TDM ProductsCorpus Christi Long Range PlanCorpus Christi Long Range Plan


““Needs-Based” TDM ProductsNeeds-Based” TDM ProductsCorpus Christi Needs-Based PlanCorpus Christi Needs-Based Plan



• Travel model runs to support Mobility Travel model runs to support Mobility Plans:Plans:– Base year;Base year;– Forecast (MTP Improvements);Forecast (MTP Improvements);– ““Needs-Based”/Mobility Plan;Needs-Based”/Mobility Plan;– No-build scenario;No-build scenario;– Innovative financing option.Innovative financing option.– Interim years if available…Interim years if available…


““Basic” TCI Calculation StepsBasic” TCI Calculation Steps

• Obtain planning model volumes with Obtain planning model volumes with transit trips already removed;transit trips already removed;

• Derive travel speeds on links by hour from Derive travel speeds on links by hour from volumes and capacities; volumes and capacities; – Utilizes air quality process.Utilizes air quality process.

• Use free-flow speeds as “base case”;Use free-flow speeds as “base case”;– Table of equals by urban area.Table of equals by urban area.


““Basic” TCI Calculation StepsBasic” TCI Calculation Steps

• Calculate recurring and incident delay:Calculate recurring and incident delay:

• Account for delay reduction “credits” for Account for delay reduction “credits” for operational improvements “not in model”;operational improvements “not in model”;

• Summarize by geography, system element Summarize by geography, system element and time;and time;

• Calculate measures (i.e. TCI value).Calculate measures (i.e. TCI value).

ContinuedContinued


Identifying the Funding GapIdentifying the Funding Gap

1.00

1.25

1.50

1.75

2000 2010 2020 2030

1.711.71 – No Build Scenario – No Build Scenario

**1.51 1.51 - MTP Improvements- MTP Improvements (Financially-Constrained Plan)(Financially-Constrained Plan)

1.081.08 – Mobility Plan – Mobility PlanEliminating Severe Eliminating Severe CongestionCongestion

1.391.39 – Innovative – InnovativeUnfunded GapUnfunded Gap

TCITCI

ValuesValues

1.00 1.00 – No Delay– No Delay

Financing SolutionsFinancing Solutions


Estimating the Cost of Estimating the Cost of Implementing Mobility PlansImplementing Mobility Plans

• What is the cost for adding the lanes miles What is the cost for adding the lanes miles to eliminate V/C ratio > 1.0 in MTP?to eliminate V/C ratio > 1.0 in MTP?– 5 years of letting history analyzed to develop 5 years of letting history analyzed to develop

cost factorscost factors

• Four main project categories:Four main project categories:– New capacity on new right-of-way;New capacity on new right-of-way;– New capacity on existing right-of-way;New capacity on existing right-of-way;– New capacity and reconstruction; and,New capacity and reconstruction; and,– Reconstruction only.Reconstruction only.


Lane Mile Costs CategoriesLane Mile Costs Categories

• Area:Area:– DFW-Houston;DFW-Houston;– Austin-San Antonio-El Paso;Austin-San Antonio-El Paso;– All other urban areas.All other urban areas.

• Four main project categories;Four main project categories;

• Roadway type: Freeway or arterial, andRoadway type: Freeway or arterial, and

• Area type (CBD, urban, suburban, rural).Area type (CBD, urban, suburban, rural).


Lane Mile CostsLane Mile CostsNew Construction on New Right-of-Way (million $)New Construction on New Right-of-Way (million $)

Area Type -Area Type -FacilityFacility

TypeType

Dallas-Ft. Dallas-Ft. WorthWorth

HoustonHouston

AustinAustinSan AntonioSan Antonio

El PasoEl Paso

All OtherAll OtherUrbanUrbanAreasAreas

CBD FreewayCBD Freeway 8.08.0 5.95.9 3.53.5

CBD ArterialCBD Arterial 3.33.3 3.13.1 1.11.1

Urban FreewayUrban Freeway 6.16.1 4.34.3 3.03.0

Urban ArterialUrban Arterial 3.13.1 2.82.8 1.11.1

Suburban FreewaySuburban Freeway 4.14.1 3.73.7 2.52.5

Suburban ArterialSuburban Arterial 1.41.4 1.41.4 0.70.7

Rural FreewayRural Freeway 2.02.0 1.41.4 1.21.2

Rural ArterialRural Arterial 1.41.4 1.21.2 0.70.7


Lane Mile CostsLane Mile CostsOther Construction: New capacity on existing ROW, new capacity and Other Construction: New capacity on existing ROW, new capacity and

reconstruction, and reconstruction only (million $)reconstruction, and reconstruction only (million $)

Area Type -Area Type -FacilityFacility

TypeTypeDallas-Ft. WorthDallas-Ft. Worth

HoustonHouston

AustinAustinSan AntonioSan Antonio

El PasoEl Paso

All OtherAll OtherUrbanUrbanAreasAreas

CBD FreewayCBD Freeway 8.48.4 6.36.3 4.04.0

CBD ArterialCBD Arterial 3.03.0 2.92.9 1.51.5

Urban FreewayUrban Freeway 5.35.3 4.04.0 3.53.5

Urban ArterialUrban Arterial 2.72.7 2.52.5 0.90.9

Suburban FreewaySuburban Freeway 3.13.1 3.03.0 3.03.0

Suburban ArterialSuburban Arterial 1.81.8 1.21.2 1.01.0

Rural FreewayRural Freeway 1.61.6 1.61.6 1.21.2

Rural ArterialRural Arterial 1.41.4 1.11.1 0.60.6


Lane Mile CostsLane Mile Costs

• Other Construction category weightings:Other Construction category weightings:– New capacity on existing right-of-way New capacity on existing right-of-way 40%40%– New capacity and reconstruction New capacity and reconstruction 50%50%– Reconstruction only Reconstruction only 10%10%

• Most accurately represent future project Most accurately represent future project mix,mix,

• Costs for interchanges, ramps, elevated Costs for interchanges, ramps, elevated structures also estimated….structures also estimated….


Significant Mobility Significant Mobility Needs in StateNeeds in State

• $188 billion$188 billion in needed projects to achieve in needed projects to achieve acceptable levels of mobility in Texas;acceptable levels of mobility in Texas;

• $102 billion$102 billion estimated to meet those estimated to meet those needs;needs;

• Therefore; there is a total fundingTherefore; there is a total funding gap gap of of $86 billion$86 billion……


Significant Mobility Significant Mobility Needs LocallyNeeds Locally

• Dallas-Fort Worth: Dallas-Fort Worth: $19.5 billion$19.5 billion

• Austin: Austin: $18.3 billion$18.3 billion

• Houston: Houston: $16 billion$16 billion

• El Paso: El Paso: $10.5 billion$10.5 billion

• Tyler: Tyler: $349 million$349 million

• Harlingen-San Benito: Harlingen-San Benito: $139 million$139 million

• Brownsville: Brownsville: $97 million$97 million


Significant Mobility Significant Mobility Needs LocallyNeeds Locally

• Total additional lane miles needed for the Total additional lane miles needed for the eight TMAs in Texas:eight TMAs in Texas:– 11,346 lane miles (2025 value)11,346 lane miles (2025 value)

• Lanes miles used as a surrogate for all Lanes miles used as a surrogate for all types of congestion relieving projectstypes of congestion relieving projects


ConclusionsConclusions

• Mobility plans:Mobility plans:– Identify needs beyond MTP; Identify needs beyond MTP; – Identify benefits of addressing needs; Identify benefits of addressing needs; – Examine innovative solutions to address Examine innovative solutions to address

unmet needs; unmet needs;


Questions???Questions???

http://mobility.tamu.eduhttp://mobility.tamu.edu

trb planning applications identifying the long-range transportation improvement and funding needs...

Documents

needsbased planswhat

congestion threshold

value of time

free flow speeds

mobility assignments

mobility goals

travel time

air quality process