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presented to

Model Task Force Meeting

presented by

Vidya Mysore, FDOT Central Office

Krishnan Viswanathan, Cambridge Systematics, Inc.

12/12/06

LEHD data for LEHD data for FSUTMS!!!FSUTMS!!!

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AgendaAgenda

ObjectiveObjective Longitudinal Employer Household Dynamics Longitudinal Employer Household Dynamics

(LEHD) Description(LEHD) Description Data AnalysisData Analysis Future DirectionsFuture Directions

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ObjectiveObjective

Possible use of LEHD and Employment data Possible use of LEHD and Employment data for travel demand modelingfor travel demand modeling

Current and future directions of Census and other Current and future directions of Census and other available data sources for transportationavailable data sources for transportation

NHTS Add-onNHTS Add-on Review of QCEW [Quarterly Census of Employment and Review of QCEW [Quarterly Census of Employment and

Wages] (Employment data from AWI, state agency) and Wages] (Employment data from AWI, state agency) and LEHD DataLEHD Data

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AgendaAgenda

ObjectiveObjective LEHD DescriptionLEHD Description Data AnalysisData Analysis Future DirectionsFuture Directions

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The LEHD ConceptThe LEHD Concept

Longitudinal Employer-Household Dynamics Program(LEHD)

SurveysAdministrativeRecordsCensuses

LocalEmployment

Dynamics

LocalTransportationDynamics

LocalImmigrationDynamics

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LEHD DescriptionLEHD Description LEHD combines federal and state administrative data on employers LEHD combines federal and state administrative data on employers

and employees with core Census Bureau censuses and surveysand employees with core Census Bureau censuses and surveys Local Employment Dynamics (LED) is a voluntary partnership between Local Employment Dynamics (LED) is a voluntary partnership between

state labor market information agencies and the U.S. Census Bureau to state labor market information agencies and the U.S. Census Bureau to develop new information about local labor market conditionsdevelop new information about local labor market conditions

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LEHD DescriptionLEHD Description The data for LEHD will be based on Quarterly Census of Employment and Wages The data for LEHD will be based on Quarterly Census of Employment and Wages

(QCEW/ES-202) (QCEW/ES-202) Number of people employed and the wages paid to the employees each quarter Number of people employed and the wages paid to the employees each quarter Multi-establishment employers also provide individual worksite data Multi-establishment employers also provide individual worksite data Preliminary annual data are available in June and final annual data are available in Preliminary annual data are available in June and final annual data are available in

October of each year. Quarterly data are available six months after the end of each October of each year. Quarterly data are available six months after the end of each quarter quarter

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LEHD Origin Destination LEHD Origin Destination DatabaseDatabase

Home Block(U/I Wage Data)

Workplace Block(QCEW Data)

# of Workers (primary job) and # of Jobs

Home Profile – block group• # workers• Worker distribution

• age• earnings• industry

Work Profile – block group• # establishments • # workers• Worker distribution

• age• earnings• industry

• Demand/ Growth Indicators• Job creation/loss• Hires/separations• Earnings hires/separationsAcknowledgments : US Census Bureau

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LEHD Origin Destination LEHD Origin Destination Database Database

Yearh_geocodefullw_geocodefulljobs_alljobs_primjobs_priv_alljobs_priv_prim

Year YYYYFIPS state, FIPS county; Census tract, Census block; homeFIPS state, FIPS county; Census tract, Census block; workNumber of jobs to which workers made this tripNumber of primary jobs to which workers made this tripNumber of private sector jobs to which workers made this tripNumber of private sector primary jobs to which workers made this trip

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LEHD ExampleLEHD Example

Where South Duval residents workWhere South Duval residents work

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Who was sampled?Who was sampled?

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When & how were they When & how were they sampled?sampled?

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ComparisonsComparisonsCTPPCTPP ACSACS LEHDLEHD

FrameFrame HH and GQsHH and GQs HH and GQsHH and GQs UI UI Workers/FirmsWorkers/Firms

Sample RateSample Rate ~ 1 in 6 ~ 1 in 6 per 10 yearsper 10 years

~ 1 in 8 ~ 1 in 8 per 5 yearsper 5 years

~ 1 in 1 ~ 1 in 1 4 times a year 4 times a year

Release Release FrequencyFrequency

DecennialDecennial AnnualAnnual QuarterlyQuarterly

CoverageCoverage NationwideNationwide NationwideNationwide 41 States 41 States

Reference Reference PeriodPeriod

WeekWeek WeekWeek QuarterQuarter

AvailabilityAvailability NoNo YesYes YesYes

Acknowledgments : US Census Bureau

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LEHD OD with ACSLEHD OD with ACS

Home Block(U/I Wage Data)

Workplace Block(QCEW Data)

# of Workers (primary job) and # of Jobs

Home Profile – block group• # workers• Worker distribution

• age• earnings• industry

Work Profile – block group• # establishments • # workers• Worker distribution

• age• earnings• industry

• Demand/ Growth Indicators• Job creation/loss• Hires/separations• Earnings hires/separations

ACS Data• Trip Time• Mode• Distance

Acknowledgments : US Census Bureau

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Travel Demand Models Travel Demand Models ApplicationsApplications

LEHD/LED data can be used get complete information LEHD/LED data can be used get complete information workers and place of employmentworkers and place of employment

LEHD data can be enhanced with ACS data LEHD data can be enhanced with ACS data Small area OD pairs can be tabulatedSmall area OD pairs can be tabulated Data available on a quarterly basisData available on a quarterly basis

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LEHD and QCEW Data LEHD and QCEW Data AvailabilityAvailability

Available at no cost from AWIAvailable at no cost from AWI Non Disclosure Agreement with AWINon Disclosure Agreement with AWI

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AgendaAgenda

ObjectiveObjective LEHD DescriptionLEHD Description Data AnalysisData Analysis Future DirectionsFuture Directions

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Data AnalysisData Analysis

Models UsedModels Used QCEW Data AnalysisQCEW Data Analysis Comparison between InfoUSA and QCEW dataComparison between InfoUSA and QCEW data ResultsResults

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Models UsedModels Used2005 NERPM CF Model 2000 Polk TPO Model

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QCEW (ES202) Data AnalysisQCEW (ES202) Data Analysis

December 2004 data used for analysisDecember 2004 data used for analysis Data overlaid to TAZData overlaid to TAZ Geocoded the data for address matchingGeocoded the data for address matching ZDATA2 data developed from QCEW DataZDATA2 data developed from QCEW Data

Model Total QCEW Employment

Lat/Long Information Available

Geocoded to Model TAZ

Address Matched to TAZ

NERPM 728,044 487,954 468,755 176,957

Polk 438,190 182,675 169,771 167,370

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Comparison between InfoUSA Comparison between InfoUSA and QCEW Dataand QCEW Data

NERPM QCEW InfoUSA Model

MAN. INDUSTRIAL 113,003 89,318 54,903

OTHER INDUSTRIAL 34,699 42,644 137,255

COMMERCIAL 145,355 126,640 182,157

SERVICE 352,655 274,766 420,058

TOTAL 645,712 533,368 794,373

POLK QCEW InfoUSA Model (2000)

INDUSTRIAL 41,133 35,761 41,684

COMMERCIAL 179,468 58,486 59,775

SERVICE 116,540 99,418 105,611

TOTAL 337,141 193,665 207,070

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Study ResultsStudy Results

Model HBW Trips LEHD Primary Jobs

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Study ResultsStudy Results

Model HBW Trips CTPP JTW Trips

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Study ResultsStudy Results

Model HBW Trips

LEHD Primary Jobs

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Study ResultsStudy Results

Model HBW Trips

CTPP JTW Trips

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AgendaAgenda

ObjectiveObjective LEHD DescriptionLEHD Description Data AnalysisData Analysis Future DirectionsFuture Directions

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Future Directions Future Directions

Potential data source for FSUTMSPotential data source for FSUTMS ES 202 – Employment DataES 202 – Employment Data LEHD – Model CalibrationLEHD – Model Calibration

Coordination effort for data aggregationCoordination effort for data aggregation Work with Census Bureau to produce LEHD for Florida Work with Census Bureau to produce LEHD for Florida

modelmodel Variability of data over timeVariability of data over time Stay tunedStay tuned

Vidya @ Vidya @ vidya.mysore@dot.state.fl.usvidya.mysore@dot.state.fl.us (850-414-4924) (850-414-4924) Krishnan @ Krishnan @ kviswanathan@camsys.comkviswanathan@camsys.com (850-219-6388) (850-219-6388)