Ed ChristopherEd ChristopherResource Center near ChicagoResource Center near Chicago

Federal Highway Administration Federal Highway Administration 19900 Governors Drive19900 Governors Drive

Olympia Fields, IL 60461Olympia Fields, IL 60461

708-283-3534708-283-3534edc@EdTheFed.comedc@EdTheFed.com

In this ModuleIn this Module

Overview Census 2000 with Overview Census 2000 with a Transportation Focusa Transportation Focus

Census 2000Census 2000Short Form and Long FormShort Form and Long Form

Short form

Long form

Census 2000Census 2000Short Form QuestionnaireShort Form Questionnaire

7 Questions7 Questions NameName SexSex AgeAge

RelationshipRelationship Hispanic OriginHispanic Origin

RaceRace Owner/Renter StatusOwner/Renter Status

For the U.S. as a whole, about For the U.S. as a whole, about one in six households one in six households received the long-form received the long-form questionnaire.questionnaire.

Census 2000Census 2000Long Form Sampling PatternLong Form Sampling Pattern

17%

Transportation Related QuestionsTransportation Related QuestionsLong FormLong Form

Place of WorkPlace of Work

Means of Transportation to WorkMeans of Transportation to Work

Carpool Occupancy to WorkCarpool Occupancy to Work

Departure Time for WorkDeparture Time for Work

Travel Time to WorkTravel Time to Work

Vehicles AvailableVehicles Available

€€

€€

What Data is Available?What Data is Available?

100% data or SHORT-FORM data100% data or SHORT-FORM data•Redistricting Summary File (PL Redistricting Summary File (PL Data)Data)

•Summary File 1 (SF1)Summary File 1 (SF1)•Summary File 2Summary File 2

Sample or LONG-FORM dataSample or LONG-FORM data•Summary File 3 (SF3)Summary File 3 (SF3)•Summary File 4Summary File 4

Public Use Microdata SamplePublic Use Microdata Sample(PUMS)(PUMS)

Unaggregated responses to Census Unaggregated responses to Census

2000 with all identifying information 2000 with all identifying information

removedremoved

– 1-Percent National Characteristics File 1-Percent National Characteristics File

– 5-Percent State Files 5-Percent State Files

• 100,000 population threshold for 100,000 population threshold for geographygeography

• 10,000 population threshold for 10,000 population threshold for characteristicscharacteristics

California PUMAs (5%) andCalifornia PUMAs (5%) andSuper-PUMAs (1%)Super-PUMAs (1%)

5-Percent 1-Percent

62 62 super-super-PUMAPUMA

233 233 PUMAsPUMAs

Bay Area PUMAs (5%) andBay Area PUMAs (5%) andSuper-PUMAs (1%)Super-PUMAs (1%)

54 PUMAs54 PUMAs

12 super-12 super-PUMAsPUMAs

Typical Products We UseTypical Products We Use

PL171PL171 100%100% Pop, Age, Race (Blocks)Pop, Age, Race (Blocks)

Summary File 1 (SF1)Summary File 1 (SF1) 100%100% Pop, Age, Pop, Age, Race, Household size, owner/renter Race, Household size, owner/renter (Blocks) (Blocks) More Geography than PL171More Geography than PL171

Summary File 3 (SF3) Summary File 3 (SF3) 17%17% All All Variables, (Block Group)Variables, (Block Group)

Public Use Micro Series (PUMS) Public Use Micro Series (PUMS) 5% 5% of SF3of SF3 Individual Records (Big ZonesIndividual Records (Big Zones))

MediaMedia

InternetInternet

CD-ROM /DVDCD-ROM /DVD

PaperPaper

http://www.census.govhttp://www.census.gov

The Transportation The Transportation DataData

Now for a Now for a Slight Gear Slight Gear

ChangeChange

Census Census TransportationTransportation

Planning PackagePlanning Package

WhatWhat is CTPP 2000? is CTPP 2000?

The Census Transportation The Census Transportation Planning Package 2000 is a set of Planning Package 2000 is a set of special tabulations from the long special tabulations from the long

form of the decennial census form of the decennial census designed by transportation designed by transportation

planners for transportation plannersplanners for transportation planners

It summarizes the dataIt summarizes the data

At ResidenceAt ResidenceAt WorkplaceAt Workplace

Flows between Flows between Home and WorkHome and Work

Who developed it?Who developed it?

It was guided by a Working GroupIt was guided by a Working GroupUSDOT USDOT (FHWA, BTS, FTA and OST)(FHWA, BTS, FTA and OST)

Census Bureau Census Bureau (Migration and Geography Divisions)(Migration and Geography Divisions)

AASHTOAASHTO

States and MPOsStates and MPOs

TRB Subcommittee on Census DataTRB Subcommittee on Census Data

www.www.TRBcensus.comTRBcensus.com

CTPP 2000 was a product of CTPP 2000 was a product of the states and MPOs funded the states and MPOs funded through an AASHTO Pooled through an AASHTO Pooled Fund ProjectFund Project

Who paid for it?Who paid for it?

Buyers/UsersBuyers/Users Direct CostDirect Cost TablesTables

19601960 OMBOMB ?????? ??????

19701970 112112 $0.6 M$0.6 M 4343

19801980 152152 $2.0 M$2.0 M 8282

19901990 $2.5 M$2.5 M 120120

20002000 $3.0 M$3.0 M 203203All StatesAll States

and MPOsand MPOs

WhatWhat are the CTPP 2000 are the CTPP 2000 Products?Products?

Tabulations Tabulations at Residenceat Residence

Tabulations Tabulations at Workplaceat Workplace

Flows between Flows between Home and WorkHome and Work

Main CTPP 2000 ProductsMain CTPP 2000 Products

Collateral ProductsCollateral Products State and County ProfilesState and County Profiles County Flow DataCounty Flow Data

CTPP 2000 Main ProductsCTPP 2000 Main Products

Tabulations Tabulations at Residenceat Residence

Tabulations Tabulations at Workplaceat Workplace

Flows between Flows between HomeHome and and WorkWork

Part 1Part 1 Part 2Part 2 Part 3Part 3

When was it released?When was it released?

Residence Based TablesResidence Based TablesOct 2002 Mar. 03 AprilOct 2002 Mar. 03 April

June July-August 2003June July-August 2003

CTPP 2000 cames out in 3- wavesResidence, Workplace and Worker Flows

Workplace Workplace Spring / Summer 2004Spring / Summer 2004

Summer 2003 Summer 2003 Fall 2003Fall 2003

-------------------

------------

---

------------

-------------------------

--------

---

-

------------

---Worker Flow TablesWorker Flow Tables Winter 2003-2005 Winter 2003-2005

____

------ Spring

Spring-------- ----

-

-SummerSummer

Why all the delay?Why all the delay?

Disclosure Review Board NegotiationsDisclosure Review Board Negotiations (Sept 2001 to Jan 2002)--- 5 months(Sept 2001 to Jan 2002)--- 5 months

People Living in Group Quarters Issues People Living in Group Quarters Issues (Jan to May 2003)--- 5 months(Jan to May 2003)--- 5 months

Part 3 Software Issues Part 3 Software Issues (Sept ‘04 to ???)--- 9+months(Sept ‘04 to ???)--- 9+months

Inexcusable delays caused by CB on whether or not 13 Inexcusable delays caused by CB on whether or not 13 tables in CTPP 2000 Part 1 could be released. Finally, CB tables in CTPP 2000 Part 1 could be released. Finally, CB allow all but 3 Tables originally identified… allow all but 3 Tables originally identified… Dave Clawson, Dave Clawson, AASHTOAASHTO

Why the 2003 Delay?Why the 2003 Delay?Group Quarters IssueGroup Quarters Issue

Fear by Census Bureau that one could Fear by Census Bureau that one could identify the “characteristics” of workers identify the “characteristics” of workers who live in group quarters by subtractionwho live in group quarters by subtraction

SF3--Workers SF3--Workers who live in who live in

Households and Households and

Group QuartersGroup Quarters

CTPP 2000--CTPP 2000--Workers who Workers who

live in live in Households Households

Workers who Workers who live in Group live in Group

Quarters Quarters -- ==

Modes Used Modes Used Modes Used

The CATThe CATCTPP Access ToolCTPP Access Tool

How is it packaged?How is it packaged?

ASCII TooASCII Too

What was the What was the Distribution Process?Distribution Process?

CDs with Extraction SoftwareCDs with Extraction Software To MPOs and States FirstTo MPOs and States First

(ASCII also available(ASCII also available) ) 30 Day review period30 Day review period

Corrections madeCorrections made

Quantities prepared and redistributedQuantities prepared and redistributed

BTS (and others) distribution program(s)BTS (and others) distribution program(s)

MPO - State NoteMPO - State Note

Feel free to copy and distribute the Feel free to copy and distribute the data to your member agencies and data to your member agencies and

othersothers

The are no copyright or licensing The are no copyright or licensing provisionsprovisions

Is there be Training?Is there be Training?

Yes! Sort ofYes! Sort of

Provides all basics on understanding, using Provides all basics on understanding, using and working with the CTPP data in a and working with the CTPP data in a transportation planning contexttransportation planning context

What is it?

Self-Paced, Individualized Training

CD-Rom Based

Loaded with Animations

Fun yet Informative

Less than 5-Hours to Complete

Chock Full of Information

MPO-State NoteMPO-State Note

Feel free to copy and distribute the Feel free to copy and distribute the data to your member agencies and data to your member agencies and

othersothers

The are no copyright or licensing The are no copyright or licensing provisionsprovisions

Where do I get the CTPP Where do I get the CTPP 2000 Data?2000 Data?

http://www.transtats.bts.gov/http://www.transtats.bts.gov/

https://www.bts.gov/pdc/https://www.bts.gov/pdc/

Where do I get the CTPP Where do I get the CTPP 2000 Data?2000 Data?

What are we Getting?What are we Getting?Let’s Look at the DetailsLet’s Look at the Details

So how does this thing work?

Tables—Lots of TablesTables—Lots of Tables

121 Tables of Residents’ Based Data121 Tables of Residents’ Based Data

68 Tables of Work Place Data68 Tables of Work Place Data

14 Tables of Flow Data14 Tables of Flow Data

Variables--Variables--Lots of VariablesLots of Variables

Journey-to-WorkJourney-to-WorkWork Location and Mode Departure and Travel TimeArrival Time (Calculated)

HouseholdHouseholdIncomeNos. Vehicles AvailableSize and Nos. Workers

PersonPersonWorker StatusAge, Sex, Race, Hispanic Origin, Disability WorkersWorkers

Geography--Lots of Geography

T A Z

or Block Groups

Part 1 1 2 1 T a b l e s(at Residence)

Part 2(at Workplace)

Part 3(Worker Flows)

1 4 T a b l e s

6 8 T a b l e s

What is a “Universe”?What is a “Universe”?

CTPP 2000 Table Structure

Part 1: At Residence (121 Tables) Group 1: All Workers Tables 1-29

Group 2: Workers in Housholds Tables 30-48

Group 3: Persons Tables 49-61

Group 4: Households Tables 62-83

Group 5: Housing Units Tables 84 to 88

Group 6: Computed Tables Tables 89-121

Part 2: At Workplace (68 Tables) Group 1: All Workers Tables 1-29

Group 2: Workers in Households Tables 30-48

Group 3: Computed Tables Tables 49-68

Part 3: Worker Flows (14 Tables) Group 1: Small Geography Tables 1-8

Group 2: Sm Geo Computed Tables 9-14

Sample Table ListSample Table List

SF3 CTPP 2000

Travel time to Work (4) by Means of Transportation (2)

Travel time to Work (15) by Means of Transportation (10)

Tenure (2) by Vehicles Available (6)

Vehicles Avail (5) by Hhld Income (25)

Vehicles Avail (5) by Nos. of workers in hhld (5)

AND MORE

Comparing SF3 to CTPP 2000Comparing SF3 to CTPP 2000

One-Way Household income in 1999 (11)

Two-Way Sex (3) by Age (12)

Three-WayHousehold size (5) by Vehicles available (6) by Household income (11)

Four-WayVehicles available (3) by Hispanic origin (3) by Race of person (5) by

Means of transportation to work (8)

Sample CTPP Cross TabulationsSample CTPP Cross Tabulations

http://www.dot.gov/ctpp/http://www.dot.gov/ctpp/

Total Total Total TotalDrove Alone Drove Alone Drove Alone Drove Alone

2 Person Carpool 2 Person Carpool 2 Person Carpool3 Person Carpool 3 Person Carpool4 Person Carpool

5-6 Person Carpool7+ Person Carpool

Bus/Trolley Bus Bus/Trolley Bus Bus or Trolley BusStreetcar/TrolleySubway/Elevated

RailroadFerryboat

BicycleWalkedTaxicab

MotorcycleOther Means

Worked at Home Worked at Home Worked at Home

18 Modes 11 Modes 8 Modes 5 Modes

Bicycle/Walked

Taxicab/ Motorcycle/other

Means

Bus/Trolley Bus/ Streetcar/Trolley/ Subway/Elevated/

Railroad/ Ferryboat

Bicycle/ Walked/ Taxicab/

Motorcycle/other Means/ Worked at

Home

Streetcar/Trolley/ Subway/Elevated/

Railroad/ Ferryboat

Bicycle/Walked/ Taxicab/

Motorcycle/other Means

Streetcar/Trolley/ Subway/Elevated

Railroad/ Ferryboat

Means of Transportation to Work

3+ Person Carpool2+ Person Carpool

4+ Person Carpool

SampleSample

Variable ListVariable List

NOTE: Age has 3 NOTE: Age has 3 levels, clusters or levels, clusters or elementselements

Disclosure Review BoardDisclosure Review Board

CTPP 2000 Post DRB

Part 1: at Residence (121 Tables) All Tables Rounded Zero = 0 1 through 7 = 4 8 though = Nearest Multiple of “5”

Part 2: at Workplace (68 Tables) All Tables Rounded

Part 3: Worker Flows (14 Tables) All Tables Rounded Some Tables with Thresholds

Mode to Work

Circa 1990For 2000

(ROUNDED)

Total 352 350 (not 355!)

Drive Alone 212 210

Carpool 46 45

Transit 59 60

Walk 33 35

Bike 2 4

Example of RoundingExample of Rounding

True Total 354True Total 354

Table Content

1 Total Workers (1)

2 Vehicles Available (3--zero,one or two+) by Means of Transportation (7 modes)

3 Poverty Status (3 categories)

4 Minority Status (2--white non-hispanic and all others)

5 Household Income (8 classifications)

6 Means of Transportation (17 modes)

7 Household Income (4 classifications) by Means of Transportation (4 modes)

8Mean Travel Time by Means of Transportation to Work (7 modes) and Time

Leaving Home for Work (2--AM peak and all other times)

9Median Travel Time by Means of Transportation to Work (7 modes) and Time

Leaving Home for Work (2 groupings)

10 Aggregate Number of Vehicles by Time Leaving Home for Work (2, see table 8)

11 Number of Workers per Vehicle by Time Leaving Home for Work (2, see table 8)

12 Aggregate Number of Carpools by Time Leaving Home for Work (2, see table 8)

13 Number of Workers per Carpool by Time Leaving Home for Work (2, see table 8)

14Aggregate Travel Time by Means of transportation to work (7 modes) and Time

Leaving Home for Work (2, see table 8)

Part 3: Worker Flow Tables

No record No record thresholdthreshold

Must have 3 Must have 3

unweighted unweighted

recordsrecords

Stay ConnectedStay Connected

Are You on the CTPP-News Listserve?

Have You Seen our Newsletter (the Status Report)?

http://www.dot.gov/ctpphttp://www.dot.gov/ctpp

http://www.TRBcensus.comhttp://www.TRBcensus.com

202-366-5000202-366-5000

When Mining Your Census DataWhen Mining Your Census DataKeep us in MindKeep us in Mind

Let Us Know What You Have DoneLet Us Know What You Have DoneWe Are Always Interested We Are Always Interested

Want to…Want to…Show Off Your Work?Show Off Your Work?Gain National Gain National Exposure?Exposure?Meet Other Data Users?Meet Other Data Users?Tour Washington DC?Tour Washington DC?

Sound Exciting?Sound Exciting?

TRB Urban Data and Information Systems CommitteeTRB Urban Data and Information Systems Committee

Ed Christopher-Chair (708-283-3534)Ed Christopher-Chair (708-283-3534)