ky 4 22 module 1b chapter 3 in the ts manual main survey types l.
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KY 4/22 Module 1b Chapter 3 in the TS Manual Main Survey Types Main Survey Types Household travel/activity Surveys Vehicle Intercept and External Station Surveys Transit On-board Surveys Commercial Vehicle Surveys Workplace and Establishment Surveys Special Generator, Visitor Surveys

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main survey types
Main Survey Types
  • Household travel/activity Surveys
  • Vehicle Intercept and External Station Surveys
  • Transit On-board Surveys
  • Commercial Vehicle Surveys
  • Workplace and Establishment Surveys
  • Special Generator, Visitor Surveys
  • Parking Surveys
household travel activity surveys
Household Travel/Activity Surveys
  • In the 1950s and 1960s, large sample surveys (3 to 5% of all households) conducted in-home were typical. For example, an area with 1 million population, or 400,000 households, would sample 16,000 hhlds (4%).
  • Goal was to create origin/destination matrix for region. Zones (TAZ) for modeling were much larger, because computer capacity was limited.
household travel activity surveys today
Household travel/activity surveys TODAY
  • Typically done using RDD, and typically in the range of 2,000 to 15,000 households, depending on the complexity of the stratification, e.g. SCAG survey about .3% of households.
  • Goal is no longer to get O/D matrix, but more often to update trip rates, by purpose and mode, and trip length frequency distribution.
household travel activity surveys5
Household travel/activity surveys
  • Survey strata to fit regional model
    • Household size * # of vehicles
    • # of workers * # of vehicles
    • Household size * Household Income
  • Your model may include other variables.
vehicle intercept and external station surveys
Vehicle Intercept and External Station Surveys
  • Often to capture origin/destination in large zones.
  • Methods:
    • Roadside interview
    • License plate recording
    • Handout/mailback
  • Photos from StreetSmarts/DataSmarts, Atlanta
roadside origin destination surveys
Roadside Origin/Destination Surveys

Source: StreetSmarts/DataSmarts, GA 2003

roadside origin destination surveys8
Roadside Origin/Destination Surveys

Source: StreetSmarts/DataSmarts, GA 2003

transit on board surveys
Transit On-Board Surveys
  • Often combined with marketing analysis, especially “rider/non-rider” surveys.
  • Transit agency may know count of boardings, but lack information about customer characteristics, especially frequency of transit trip-making, vehicle availability (choice vs. captive markets).
  • Household travel/activity survey may not capture enough transit trips or users for use in mode choice models. (may also need “augment samples”)
on board transit surveys
On-board Transit Surveys
  • Training with role-playing is CRITICAL, NYMTA example
  • Union rules for drivers may dictate survey implementation.
  • Peter Foote at Chicago Transit Authority is a good contact.
commercial vehicle surveys
Commercial Vehicle Surveys
  • Sample Frame issues
    • Heavy Duty Trucks
    • All commercial vehicles. Many are light duty trucks.
    • Transport as their main industry, e.g. FedEx, or as part of their service, e.g. florists
heavy duty vehicle surveys
Heavy Duty Vehicle Surveys
  • Weigh stations
  • “relieved” that pull-over is not for a violation, but for a survey
commercial vehicle surveys13
Commercial Vehicle Surveys
  • Recruitment
    • Fleets
    • Independents
    • State/Regional Trucking Association
  • Incentives to EACH Driver
workplace and establishment surveys
Workplace and Establishment Surveys
  • Applications: Downtown or other employment centers, large buildings, travel demand management programs (carpooling), ITS programs (information systems, e.g. internet-based, kiosk-based, wireless PDA)
  • Workplace-based: Email or internet surveys have very high response rates, because it is clear that the employer has agreed to participate, and that it is allowable for the employee to use worktime to complete the survey
  • Intercept surveys (PDA, handout/mail-back) often used.
special generator and visitor surveys
Special Generator and Visitor Surveys
  • Washington, DC, Orlando, Branson with high tourist markets
  • Big shopping malls
  • Airport surveys
  • Often intercept surveys (similar to establishment surveys) or hotel surveys (sample bias issues)
parking surveys
Parking Surveys
  • Quantity
  • Occupancy
  • Posted prices vs. Costs to individuals
  • Distance to “final” destination
  • Duration of stay