national household travel survey statewide applications heather contrino travel surveys team lead...
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National Household Travel Survey Statewide Applications
Heather ContrinoTravel Surveys Team Lead
Federal Highway Administration
Office of Highway Policy Information
May 10, 2007
TRB National Transportation Planning Applications Conference
Daytona Beach, Florida
About the NHTS…
• National Study on Passenger Travel– Passenger Travel is 82 percent of all VMT
• Conducted since 1969– 1969, 1977, 1983, 1990, 1995, 2001
• All Travel, All Purposes, All Modes• 2001 NHTS
– Interviewed about 70,000 households– 175,000 Persons– Travel recorded for an entire day
For Each Vehicle:Make Model Age (year)How long owned*
NHTS General Content
For Each Household:Number of peopleNumber of driversNumber of workersNumber of vehiclesIncome
For Each Person:Age GenderDriver statusWorker StatusAnnual Miles
Daily Travel Data:Origin and Destination address (for add-ons)Time trip started and endedDistanceMeans of transportation:
•vehicle type•if household vehicle, which one•if transit, wait time•if transit, access and egress mode*
Detailed purpose*Number of passengers on trip:Most recent trip for non-travelers (date)*
• Descriptive statistics– Households
– People • Drivers and Workers
– Vehicles
– Trips
• Travel Behavior – Mode share distribution
– Travel time, speed, distance,
– Work and Non-Work Travel
• Special Populations– Older Drivers
– Bike and Pedestrian
– People with Disabilities
– New Immigrants
State Involvement
• Statewide Corridor
Planning• MPO Coordination• Statewide Forecasting• Special Populations
Research
NHTS Add-On Program
In 2001, State participation included
– NY,WI, HI, TX, KY
For 2008, the Add-On program elicited tremendous response
– About 85,000 samples (currently)
– FL,GA,SC,NC,VA,NY,WI,CA,IN
– Many MPOs including Maricopa, Pima, Cedar Rapids, Pikes Peak, and Omaha.
Example NHTS Applications
• Safety Planning – California
• Travel Demand Forecasting -Wisconsin
• Air Quality Analysis – New York
• Performance Measures - Virginia
• Special Studies - Florida
• Congestion Management – U.S. DOT
Safety Planning - California
Pedestrian Fatalities per Mile of Exposure
Source: 2001 FARS pedestrian Fatalities and NHTS 2001 miles walked
Statewide Forecasting - Wisconsin
HBW Observed Vs Predicted Trip Length Frequency
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Time Interval (in minutes)
Per
cen
t T
rip
s
Observed Trip LengthFrequency
Predicted Trip LengthFrequency - Iteration 1
Predicted Trip LengthFrequency - Iteration 2
Source: 2001 NHTSBruce Aunet, WI DOT& Cambridge Systematics Inc.
Air Quality - New YorkVehicle Starts, Trip Lengths by Time of Day and Vehicle Utilization
Source: 2001 NHTS
Performance Measures - Virginia• Statewide Measures
– Person Miles Traveled (PMT), Trip Rates, VMT, Mode share, Fatality Rates, vehicle fleet characteristics
GENERAL INFORMATION
1. Demographics 1990 2000 % Change 2. Daily Travel Indicators* 1990 2001
Total Population 6,187,358 7,078,515 14.4 Persons/Households 2.36 2.52Total Households 2,291,830 2,699,173 17.8 Total Trips per Household 9.00 9.63Total Workers 3,146,858 3,481,820 10.6 Trips to Earn a living 1.76 1.87Total Vehicles 4,097,878 4,930,799 20.3 Shopping Trips 1.81 2.11Median Age 32.5 35.4 -- Social/Recreational Trips 2.15 2.57Median HH Income $33,328 $46,677 -- Family/Personal Business Trips 2.38 3.03
*Differences between 1990 and 2000 may not Source: U.S. Census Bureau, Decennial Census be statistically significant Source: NHTS
SAFETY RELATED DATA
3. Population By Age1990 2000 2010 2020 2030
Median Age 32.5 35.4 37.7 37.8 37.9 State NationLess than 16 1,344,176 1,549,079 1,657,198 1,862,082 2,054,914 Less than 16 40 65316-24 868,368 868,581 1,057,782 1,076,803 1,215,483 16-24 227 1,95025-44 2,140,016 2,237,655 2,162,175 2,368,459 2,580,890 25-44 286 17,11745-54 670,841 999,256 1,193,865 1,089,651 1,112,477 45-54 129 12,30155-64 501,353 631,611 944,866 1,115,820 1,017,267 55-64 77 3,29965-74 403,382 432,456 553,644 823,421 974,059 65-74 66 2,79375 or higher 259,222 359,877 440,715 581,159 869,929 75 or higher 109 3,966
Source: U.S. Census Bureau, Projections based on Decennial Census Source: NHTSA, FARS, 2001
6. Safety Related Travel, 2001 2001
By Age By Gender # of walk trips at night (in millions) 252.5(Millions) Total Male Female % of households with motorbikes 2.816-29 13,458 12,070 8,809 % of households with bicycles 42.830-54 41,428 32,321 20,514 % of persons who biked last week 6.855 or over 13,954 13,118 7,439
HOUSEHOLD VEHICLE FLEET7. Vehicles per Workers, Households, and Persons 8. Household Vehicle Distribution
1990 2000 % of Vehicles 1990 2001
Total vehicles 4,097,878 4,930,799 Automobile 77.5 59.6Vehicles per person 0.66 0.70 Van 4.9 8.7Vehicles per household 1.79 1.83 Pick-up 16.0 16.2Vehicles per worker 1.30 1.42 SUV -- 12.8Source: Census 2000 Other 1.7 2.7
Source: NHTS
9. Fuel UtilizationAverage Annual Fuel Cost per Household (2001) $1,499Average Annual Fuel Cost per Household (2006) $3,423
10. Vehicle Age
Note: Source of all data is 2001 National Household Travel Survey or 1990 National Personal Travel Survey, unless indicated otherwise
Source: NHTSSource: NHTS
A N
ati
on
al
Ho
us
eh
old
Tra
ve
l S
urv
ey
(N
HT
S)
Pro
du
ct
Travel Analysis Framework: Profile of Virginia
5. Annual Vehicle Miles, 2001
4. Traffic Fatalities by Age, 2001
8.37.8
10.2
6.5
11.7
8.4
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
Auto Van Pick-up SUV Others All Vehicles
Veh
icle
Ag
e (y
ears
)
• MPO Areas – Long Range Plan Development– MPO area performance measures
Environmental Justice Analysis
13. Means of Transportation, 2001
Percent of Workers
NHTS (Actual, Travel day)
Census (Usual last week)
Drove Alone 77.0 77.1 46.0Drove with others 15.1 12.7 38.1Transit 3.2 3.4 1.8Walk 0.0 2.3 9.2
Other 3.6 4.4 4.9
14. Trip Length Distribution for Work and Non-Work Trips
15. Number of Annual Weekday Trips by Time of Day
MOUNTAIN CHART
Source: NHTS
Source: NHTS
Source: NHTS
All Trips
To Work
506400
219
965
1,422
1,645
1,167
430161
267
85
1,155
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
6:00-8:59 am 9:00 a.m - Noon Noon-2:59 p.m. 3:00 - 5:59 p.m. 6:00 - 9:00 p.m. 9:00 p.m. - 5:59 a.m.Start Time
Tri
ps (
in m
illi
ons)
Work
Non-Work
To Work
Drove Alone
Drove with others
Transit
Walk
Other
All Trips
6.7
14.2
9.2
22.9
16.6
23.522.4
13.0
4.4
9.68.4
6.7
20.5
11.4
6.63.9
0.0
5.0
10.0
15.0
20.0
25.0
< 1 Mile 1 - <3 3 - <6 6 - <10 10 - <12 12 - <15 15 - <20 20 +Distance (miles)
Per
cent
of
trip
s
Work
Non-work
Mode
Trip Length Distribution
Trips by time of day
Source: 2001 NHTS
Special Studies - Florida
• Hurricane Evacuation Planning• Weekend and Holiday Travel
Planning• Event Planning• Seasonal Resident Impact
Broward County, Florida
Source: ACS 1999-2002, U.S. Census Bureau
Legend
SeasonalSEASONAL_1
No
Yes
Congestion Management – US DOT
Source: 2001 NHTS
NHTS Products• State Profiles• Policy Briefs• Trends Database• Transferability• On-line Analysis Tool • Risk Assessment Tool
– AAA Traffic Safety Foundation
NHTS
TrendsCD-ROM
Accessing NHTS Products• State Profiles
• Policy Briefs: http://ornl.gov/publications.shtml#issueBriefs
• Trends Database: To be posted soon
• Transferability
– http://fmip.ornl.gov/nhts/
• Risk Assessment Tool:
– http://www.aaafoundation.org/trafficSTATS/
• On-line Analysis Tool: http://nhts.ornl.gov
– SAS Data Set: http://nhts.ornl.gov/download.shtml
Contact Heather Contrino, FHWA
