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Summary of Recommended Standardized Procedures and Guidelines 17 Table 4. Recommended standardized question wordings. Question Recommended Question Wording Household Size (H3) "Including yourself, how many people live at this address? Please do not include anyone who usually lives somewhere else or is just visiting, such as a college student away at school. (If further clarification is needed, include infants and children, live-in domestic help, housemates, roomers.)" Number of Vehicles (H6) "How many vehicles are owned, leased, or available for regular use by the people who currently live at this address? Please be sure to include motorcycles, mopeds and RVs." (As clarification, regular use means "are in working order.") It is recommended that travel surveys include a separate question regarding the availability of bicycles for daily travel: "How many bicycles in working condition are available to members of your household for use in their daily travel?" Owner or Renter Status "Do you own or rent your home? (H7) 1 Own/buying (e.g. paying off a mortgage) 2 Rent/lease or 3 Provided by job or military" Gender (P1) "Are you (is this person) male or female?" Disability (P11) A question should be asked about disabilities that impact travel. "Do you have a disability or condition that has lasted 6 or more months and which makes it difficult to go outside the home alone--for example, to shop or visit a doctor's office?" Activity or Trip Purpose For work or work-related activities: (A2) Volunteer work should be specifically excluded from the definition; The clarification should be added that work means work for pay or profit; and, Questions should be asked about a second job. When asking for activities, at a minimum include a category "Other at-home activities." Advanced practice is to ask separately for activities that could be performed either at or away from home, such as meals, work, shopping (using the Internet). Number in Traveling "Including yourself, how many people were traveling with you? How many of these were Party (A6) household members?" If computer-assisted telephone interviewing (CATI ) is used, it is suggested that the follow-up question regarding number of household members only be asked when the household size is greater than one. At a minimum, the number in the traveling party should be asked whenever a private car, van, or truck is the mode of travel. Income "Please stop me when I get to the category that best describes the total combined income for everyone living at this address for last year:" Income response categories should match the start and end points used by the U.S. Census, although collapsing across income categories is acceptable. See Section 2.5.4. 2. A schedule of contacts and reminders, based on Table 5, should be put in place for a house- hold travel survey, at least up to Step 6. The use of the reminders to Step 11 should be rec- ommended except where response rates have already fallen below the point of cost effec- tiveness for further reminders. 3. The number of attempts to call back to a household that is not reached on the first call or where a request is made for a call back should be limited to five (i.e., a maximum of a total of six calls made to a household). These call-back attempts should be made at different times on dif- ferent days of the week. This would apply separately to the initial attempt at recruitment and to the attempt to retrieve data. 2.2.2 D-3: Proxy Reporting In surveys that use telephone or personal interviews as the method to retrieve completed data, there is a continual issue regarding who provides the activity or travel information: the person performing the activity or travel (direct respondent) or someone else. Those instances in which