highway information seminar october 25, 2012 adella santos, nhts program manager fhwa, office of...
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National Household Travel Survey
Highway Information SeminarOctober 25, 2012
Adella Santos, NHTS Program ManagerFHWA, Office of Highway Policy
Information
Today’s Talk
Background of the NHTSNHTS ProgramData CollectedExample of data uses
History
Started in 1969 and periodically conducted every 5 to 7 years.
Collected information on the American Public’s daily travel.
Labeled the “Flagship” of US travel surveys.
NHTS Program Structure
NHTS Program
National Study
Sample
Add-On Program
Sample
Some uses of NHTSMeasure the amount, type and trends in travel
for national policies and programs
Exposure rates for vehicle or pedestrian exposure (fatalities/million miles of travel)
Trip rates for local transportation planning and air-quality analysis
Research on mobility: elderly, immigrants, school children, low income
Commuting trends and comparison to Journey-to-Work Census Data
The information NHTS can provide: Congestion: Trends in commute patterns and peak
travel
Fleet mix and fuel use: Hybrids, SUVs growth and use
Safety: (drivers, passengers, and pedestrian)
Mobility Issues: Older drivers and non-drivers
Trends in basic travel measures:Changes in the components of VMT: Drivers, workers, vehicles, trip rates auto occupancy
The NHTS Program – Two Components
National Study
Serves the department, congress, and administration with 40 years of trend data
Resource for state and MPOs (forecasting and benchmarking)
Add-On Program
Allows States and MPOs to purchase additional samples for their local area
Program participation allows for state or regional estimates
Add-On Funding Process
Add-Ons = State, Local Governments & MPOs
Each Add-On pays for their number of additional samples
FHWA Pooled Fund mechanism Add-On Funds allocated by:
90 Percent for data collection and data file delivery
10 Percent for program management, quality assurance, and data analysis.
2009 Add-On Participants
Contents of Questionnaire
Trip definition is from one address to another by all modes
Trip 2 Walk
Work
Home
Trip 3 Walk
Lunch at Restaurant
Trip 4 Walk Subway, car
Trip 6 Car
Trip 7 Car
Grocery store
Daycare center
Trip 1 Car, subway, walk
Gas Station
Trip 5 Car
Example of UsesCongestion
SafetyMobility
Nature of Congestion
Peak Period travel is complexCommuters are making incidental stops
before and after work.Stopping for different reasons (childcare,
coffee, pharmacy, school age drop-offs, groceries, meals)
Incidental stops are during peak time
Non work trips add to Congestion
Mid-night
1 2 3 4 5 6 7 8 9 10 11 Noon
1 2 3 4 5 6 7 8 9 10 110
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000 Number of Vehicle Trips by Start Time and Purpose
Commute Fam/Pers (inc. Shop) School/Ch Soc/Rec Total
Start Hour
Veh
icle
Trip
s/D
ay (
mill
ions
)
Non Work Related Travel During Peak Period
0%
20%
40%
60%
80%
Mon-Thu AMPeak
Friday AM Peak Mon-Thu PMPeak
Friday PM Peak
Pct of 2009 Weekday Peak Period Travel Not Related to Work
AM Peak=6:30-9:00 AMPM Peak=4:00-7:00 PM
2009-Mandatory Peak travel About 2/3 of AM But About 1/3 PM.
0%
20%
40%
60%
80%
100%
AM PEAK PM PEAK
Flexible
Serve Pass: Flexible
Serve Pass: Mandatory
Other Work Related
To or From School
Commutes with 1 ormore stops
Directly to Work (nostops)
MandatoryMandatory
Approximately 30% of AM and 25% of PM Mandatory trips use an interstate
Use Interstate/Toll road on Trip
0
5
10
15
20
25
30
35
All Trips AMPeak
All Trips PMPeak
AM PeakMandatory
PM PeakMandatory
Per
cent
of V
ehic
le T
rips
Safety
Speed plays a roleOr
Types of Vehicles
Average Commute Speeds by MSAs: All modes
< 250K < 500K < 1M 1M- < 3M 3M+0
5
10
15
20
25
30
35
1990 1995 2001 2009
Mile
s P
er H
our
for
Com
mut
es
Fleet: Distribution of HH Vehicles by Vehicle Age
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1977 1983 1990 1995 2001 2009
Per
cent
of H
ouse
hold
Veh
icle
s
10 or more
6 to 9 years
3 to 5 years
0 to 2 years
Mobility: As we age we tend to drive fewer miles.
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
1990 1995 2001 2009
Mile
s p
er
Ye
ar
Annual VMT per Driver by Age Class
Highly Mobile (34-43)
Pre-Retirement (54-58)
Early Retirees (64-68)
Young Old (69-73)
Middle Old (74+)
NHTS: Future Long Distance TravelConduct of research is presently underway.Developing a design for a national long
distance surveyGoal is to identify characteristics of current
use of the nation’s transportation system for forecasting demand, alternative for investmentdevelopment of the system and Assess the effects of legislation on the system.
Next NHTS is Scheduled for 2015 If interested contact:
Adella SantosNHTS Program [email protected]
202-366 5021