TABLE 2 Attribute Levels for the SP Experiments Attribute Attribute Definition of Attribute Attribute Levels Category Flat Grade Nature of terrain Moderate Steep Light Roadway Traffic volume Amount of traffic on the roadway Moderate characteristics Residential /Local roads Roadway type Functional classification of roadway Minor arterial Major arterial Continuous bike route if the – whole route has a bicycle facility (a Cycling infrastructure Continuous bike lane or shared-use path) continuity Discontinuous Discontinuous - otherwise Bike route characteristics Exclusive/Segregated if – physically separated from motor Cycling infrastructure Exclusive vehicle traffic segregation Shared Shared otherwise – 5 ppb Mean exposure levels to pollutants 10 ppb Amount of 15 ppb Environmental air pollution condition subjected to while 20 ppb cycling Maximum exposure levels to 40 ppb pollutants 60 ppb 20 minutes 25 minutes Trip Duration of trip Travel time to destination 30 minutes characteristics 35 minutes 40 minutes TABLE 3 Sample Characteristics Demographics Percentages within Sample of Respondents Males: 58% Gender Females: 42% 18-24 years: 19% Age 25-34 years: 41%
TABLE 2 Attribute Levels for the SP Experiments Attribute Category Attribute Definition of Attribute Attribute Levels Roadway characteristics Grade Nature of terrain Flat Moderate Steep Traffic volume Amount of traffic on the roadway Light Moderate Roadway type Functional classification of roadway Residential /Local roads Minor arterial Major arterial Bike route characteristics Cycling infrastructure continuity Continuous bike route – if the whole route has a bicycle facility (a bike lane or shared-use path) Discontinuous - otherwise Continuous Discontinuous Cycling infrastructure segregation Exclusive/Segregated – if physically separated from motor vehicle traffic Shared – otherwise Exclusive Shared Environmental condition Amount of air pollution subjected to while cycling Mean exposure levels to pollutants 5 ppb 10 ppb 15 ppb Maximum exposure levels to pollutants 20 ppb 40 ppb 60 ppb Trip characteristics Duration of trip Travel time to destination 20 minutes 25 minutes 30 minutes 35 minutes 40 minutes TABLE 3 Sample Characteristics Demographics Percentages within Sample of Respondents Gender Males: 58% Females: 42% Age 18-24 years: 19% 25-34 years: 41%
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