KY 422 Module 1b Chapter 3 in the TS Manual Main Survey Types

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KY 4/22 Module 1bChapter 3 in the TS ManualMain
Survey Types
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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

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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.

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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.

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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.

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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

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Roadside Origin/Destination Surveys
Source StreetSmarts/DataSmarts, GA 2003
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Roadside Origin/Destination Surveys
Source StreetSmarts/DataSmarts, GA 2003
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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)

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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.
  

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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

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Heavy Duty Vehicle Surveys

• Weigh stations
• relieved that pull-over is not for a violation,
  but for a survey
  

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Commercial Vehicle Surveys

• Recruitment
• Fleets
• Independents
• State/Regional Trucking Association
• Incentives to EACH Driver

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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.

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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)
  

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Parking Surveys

• Quantity
• Occupancy
• Posted prices vs. Costs to individuals
• Distance to final destination
• Duration of stay