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Rating (Ordered Categories)
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Prompt: In the bike ride you just finished, did you feel… |
| Response Categories: Not at all (1), A little (2), Sometimes (3), Often (4), A lot (5) |
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Survey Item (index)
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1 |
…emotionally tired? |
| 2 |
…physically tired? |
| 3 |
…comfortable? [reversed to uncomfortable] |
| 4 |
…protected from traffic? [reversed to unprotected from traffic] |
| 5 |
…safe? [reversed to unsafe] |
| 6 |
…worried about turning vehicles? |
| 7 |
…worried about parked car doors? |
| 8 |
…worried about passing vehicles? |
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Person (index)
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{1, …, 20} |
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Road Condition (indicators)
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College Park (base case) |
Low speed (no data) local road, 2-lane, no road centerline, on-street parking, low traffic (average daily cars unknown) |
| Oak Ave. |
Low speed (no data) collector, 2-lane, road centerline, bike lane, on-street parking, low traffic (average daily cars~ 2,000) |
| B St. |
Low speed (~25 mph) collector, 2-lane, road centerline, buffered bike lane, no on-street parking, moderate traffic (average daily cars ~ 6,000) |
| Anderson Rd. |
Medium speed (~25-30 mph) collector, 2-lane, road centerline, bike lane, on-street parking, moderate traffic (average daily cars ~ 10,000) |
| Russell Blvd. |
Medium speed (~30-35 mph) arterial, 4-lane, center median, no bike lane, on-street parking mixed, high traffic (average daily cars ~ 20,000) |
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HF-HRV (ms)
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Standard deviation of high frequency filtered inter-heart-beat intervals |
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Average Speed (mps)
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Bicycling Ability
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How would you classify your bicycling ability? By ability we mean your balance, steering, and general technical control of your bicycle. |
Z-score of numeric index: beginner (1)
advanced beginner (2)
intermediate (3)
advanced (4)
expert (5) |
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Bicycling Desire (one item)
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I bike as often as I can |
Z-score of numeric index:
strongly disagree (1)
somewhat disagree (2)
neither disagree nor agree (3)
somewhat agree (4)
strongly agree (5) |
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Bicycling Vigilance (two-item average)
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I am a cautious bicyclist
When bicycling, I always keep a watchful eye on cars |
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