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Federal Projects and Research
National
Household Travel Survey (Federal Highway Administration) – Instrumental in the design and conduct of the 2001 NHTS
which combines the Nationwide Personal transportation Survey (NPTS) and
the American Travel Survey (ATS). Methods analysis
 included: pretest of
address-based and RDD procedures, pretest RDD contact procedures and
results, tested prospective long-distance trip reporting vs. retrospective
reporting, tested pre-contact materials. Worked with local jurisdictions
wishing to purchase add-on samples of the national survey for local
planning needs. The 2001 NHTS is currently being analyzed and published.
Responsible for a series of short analyses on the web, including
"Inklings, Early Results from the NHTS" and "Changes in the Purpose of
Travel Over Time" (on-going analysis added regularly).
http://npts.ornl.gov/npts/1995
NHTS Add-On Coordinator (Federal Highway
Administration) – The add-on program allows states and local planning
organizations to purchase enriched samples of the national survey in their
planning region households
plus added local household samples) for travel forecasting and
transportation planning. Coordinated the outreach for the add-on program,
including e-mail lists, conference talks, hand-outs and other broadcasts
of the program. Helped individual add-on sponsors sort out costs and
benefits, data items and model inputs, sample design, and other local
issues.
National Institute of Standards and Technology (NIST) --In response
to the WTC tragedy, the National Institute of Standards and Technology
conducted a 3-year safety investigation to study the factors related to
the probable cause (or causes) of post-impact collapse of the WTC Towers
(WTC 1 and 2) and WTC 7. Was part of a team studying the evacuation
experience of the people in WTC1 and WTC2, helped develop and run a
behavioral model of the evacuation experience based on interviews with
successful evacuees, estimated that just five minutes of delay in
beginning the evacuation process was detrimental to survival rates.
NPTS Transferability Study—helped
analyze and steer project to use sample households in clustered census
tract to develop transferable trip generation rates. Help with outreach
for beta testing of resulting web-based tool to help local, MPO and State
users calculate benchmark statistics for their local areas.
 "Journey-to-Work Trends in the United States and Its
Major Metropolitan Areas, 1960 – 2000" (Publication no.
FHWA-EP-03-058) Primary author for this report which tracks trends in
demographics, worker characteristics, and commuting in the U.S. and the 49 MSAs of one-million residents or more (not including San Juan, Puerto
Rico). Used the decennial Census Data to look at national trends in
population and workforce growth, changes in household structure, and
trends in mode of travel, travel time, departure time, vehicle
availability and immigration. Looked in detail at changes in place of work
and place of residence, examining the implications of suburban-to-suburban
growth in commutes and the effect on change in mode and travel time.
Researched the changes in commuter flows for the 49 metro areas over 40
years, with a special emphasis on case studies of five metro areas.
Published in 2003.
"Using the American Community Survey for Transportation
Planning" (NCHRP 8-48) Currently developing a practitioner’s guidebook
for using the ACS for transportation planning, providing the
transportation planning community with a central reference for
understanding the American Community Survey and how these data differ from
the decennial census long form, the source of CTPP (Census Transportation
Planning Package). In addition, the guidebook will provide transportation
planners and policy makers with practical guidance and step-by-step
instructions on analyzing, interpreting, and presenting American Community
Survey data.
Nationwide Personal Transportation Survey
(Federal Highway Administration)- Researched selected areas of the 1990
and 1995 data for review and publication on the web (www.cta.ornl.gov/npts) as
papers and as FAQs. Examples include the analysis of the effect of method
changes in the 1995 NPTS, such as using a trip diary over recall, which
showed that diary reports collected about 30% more non-work trips and that
household rostering of trips resulted in nearly 10 percent more trip
reports. Conducted a meta-analysis of trip rates from 10 regional travel
surveys and calculated adjustment factors for trend analysis of the NPTS
series. Analyzed of the effect of non-reports on VMT per person and showed
the under-reporting of travel by teenage boys and over-reporting by newly
retired men skewed the self-estimates of annual miles driven.
"Travel Estimation Techniques for Urban Planning"
- NCHRP Report 365 - One of the authors/primary investigators for this
textbook on the application of travel data to the travel demand
forecasting models. Researched the relationship between trip generation
and urban form, trip chaining, and the changes in travel patterns observed
since the publication of NCHRP 187 "Quick-Response Urban Travel Estimation
Techniques and Transferable Parameters." Conducted a meta-analysis of
model inputs and data needs, including the parameters obtained from nearly
20 O-D datasets used all over the country, examined the similarities and
differences in data collection and reduction techniques, and compared trip
generation rates by region, by urban size, by urban form, and by
demographic mix. Published in 1998.
"Travel Survey Manual" (U.S. DOT and U.S. EPA) - One of the chapter authors of this well-recognized state-of-the-practice
manual of procedures for the conduct of travel behavior surveys of all
types. Was individually responsible for detailed descriptions of travel
survey design and conduct for on-board transit, workplace, visitor, and
longitudinal survey chapters. Includes discussion of statistical design
and analysis, with step-by-step instructions where appropriate,
information on costs and benefits of various designs, and recommendations
for survey procedures. Published July, 1996.
Regional Comprehensive Travel Behavior Inventories
 San Juan Metropolitan
Region Planning
Study (Commonwealth of Puerto Rico)-
Managed major data-collection efforts
encompassing home-interview, establishment, and on-board bus and jitney
surveys. Forecast future population and employment and allocated to small
geography based on the present land use and constraints to future
development and accessibility to allocate population and employment growth
to small area (TAZ).
Cleveland Household, Establishment, and Transit Surveys
(NOACA, RTA, and Cleveland Growth Association)- Designed and analyzed
major data-collection efforts encompassing home-interview, establishment,
and on-board bus surveys. Workplace survey completed 150 sites in the
greater Cleveland area. Transit survey collected statistically robust data
for each route and time period. Model results used to forecast needed
infrastructure improvements, including patronage on future light rail.
 Bangkok Thailand Comprehensive Surveys (DeLeuw-Cather,
International)- In-country (Thailand) task manager for a suite of surveys
conducted to estimate ridership for new high-speed transit (MRTA).
Designed an in-home personal interview household travel survey for the
greater Bangkok region (few households have telephones), including
developing travel diaries and forms for translation, and training field
supervisors. Estimated samples and designed approach for Census
non-coverage areas (squatters). Designed employee surveys for sites near
potential future stations, intercept surveys of visitors, and an on-board
survey for three transit vehicle types. All surveys included stated
preference components to help estimate future fare strategies.
Shanghai Comprehensive Transportation Planning (City of
Shanghai, PRC)- Managed the data processing, including the statistical
quality checks and analyzed the results from the home-interview origin and
destination survey. Used GIS to plot demographic characteristics in small
geography, and analyze land-use and socioeconomic patterns. Developed a
delay factor for EMME/2 that simulated the bus-bicycle conflict at bus
stops and assisted in the design solutions for intersection treatments for
bicycle traffic.
Edmonton Travel Survey (Alberta, Canada) - Acted as
on-site technical advisor for this travel survey to develop inputs for the
creation of a utility-based household trip model. Designed a focused
sample of 5,000 households in three geographic divisions and developed a
questionnaire including detail on transit usage, mobility impairments,
parking availability and cost, and stated-preference questions for each
trip to determine elasticity of demand. Trained a staff of 50 interviewers
for recruiting and data collection, and provided a management information
system for sample tracking and quality control. Produced results,
including sample bias and the error of the estimates for each major
variable.
Establishment and Truck Projects
 Greater
Charlotte Region Establishment Survey (Charlotte, NC)- Developed survey techniques to collect and geocode
employee addresses for a sample of basic industry, and to "borrow" trip
rates for non-employee trips to Basic sites. Remainder of sample divided
into "Highway Retail", "Retail", "High-Visitor Service", and "Low-Visitor
Service". Responsible for sample design, quality control, weighting and
analysis of the survey. Special research into the travel characteristics
to mixed-use (Smart Growth or Traditional Design) developments versus
strip malls.
Southeastern Pennsylvania Establishment Survey
(Pittsburgh)- Responsible for deign, quality control, weighting and
analysis of the survey of 166 sites in the greater Pittsburgh region.
Divided service industry into "High-Visitor" and "Low-Visitor" by SIC
code. Developed survey forms with detailed demographic data on employees
and visitors, such as number of children, workers, etc. in household. Used
personal interview techniques for employees in hard-to-survey occupations
(retail, janitorial, etc.)
 Dallas-Ft. Worth Workplace Survey (NCTCOG)- Responsible
for deign, quality control, weighting and analysis of the survey of 270
sites in the Metroplex. Developed a sample methodology that is not skewed
towards larger-sized workplaces. Designed and conducted a test of reported
auto-occupancy of walk-ins vs. observed auto-occupancy of drive-throughs
for restaurants and banks offering drive-through facilities.
Atlanta Regional Commission Establishment Survey (ARC)-
Project manager for this large-scale survey of 270 establishments sampled
across area-type in the Atlanta region. Developed the sample design,
coordinated with the regional travel model for air-quality analysis,
analyzed, weighted and presented the results.
 El Paso, Texas-Establishment, Special Generator, and Truck Surveys
─
Managed and conducted all phases of this major data collection using TTIs
sample design and procedures, including the analysis of "activity centers"
as grouped destinations for visitors.
Chicago Master Plan
Update Study on Intermodal Truck
Travel (CDOT) - Designed and managed this survey feeding into an economic
analysis of the impact and the benefit of the growing intermodal industry
in the greater Chicago region. Sites included O'Hare International Airport
cargo area. The survey results were submitted to ITE for development of
intermodal yard trip rates as a new category.
Baltimore-Washington International Airport
Transportation Planning Study (Maryland Mass Transit Administration, MTA)-
Developed a land-use inventory for the BWI area. Designed and conducted an
employer/employee survey to understand work-based travel and possible
transit shifts. Forecast future population, land-use, and employment by
zone in five-year increments based on committed and proposed development
and the analysis of present and projected zoning.
 Silver Spring Survey of Commuters on Choice of Mode─
Implemented a stratified sample approach for workplace survey that
decreased field costs and resulted in +/- 2 percent error at the 95%
confidence level for trip attraction estimations.
Rock Spring Park Employee Transportation Survey─
Designed, managed, and analyzed employee origin-destination and
attitudinal survey for trip reduction program. Included stated preference
elements for transit use.
 Lake-Cook Transit Corridor Workplace Survey─
Designed
and managed stratified sample survey to determine potential ridership for
new transit service, including analysis of access/egress mode and Areverse
commute@ barriers. Included stated preference elements for patronage
forecast.
Transit Projects
New Orleans Mode Choice Model Update─ Designed and
conducted successful data collection for a tourist travel demand
sub-model, including visitor survey and transit on-board survey.
 WMATA Metrobus Passenger Survey for Fare Allocation─
Designed procedures for sample selection, training, and geographical
analysis of trip segments by jurisdiction.
Charlotte On-Board
Bus Survey ─ Managed the full system
on-board bus survey, and including a smaller sample on-board with the
Special Transportation Service (para transit service) including a verbal
interview component.
Chicago CTA Downtown Circulator Project
─ Designed and
managed this high-profile on-board bus survey using verbal interviews for
unique O-D analysis and patronage forecast.
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