Variable No. Item Reference PCA (%) Cronbach’s Attitude AT1 For me, running against a red light in this situation would be … Bad to good Ajzen [43 ]; Elliott et al. [47 ] 72.5 0.873 AT2 Foolish to wise AT3 Dangerous to safe AT4 Unnecessary to necessary Subjective norm SN1 People who are important to me disapprove of my red-light running in this situation. (Strongly disagree to strongly agree) Demir et al. [21 ]; Ajzen [43 ] 73.7 0.821 SN2 People who are important to me bother with my red-light running in this situation. (Strongly disagree to strongly agree) SN3 People who are important to me tolerate my red-light running in this situation. (Strongly disagree to strongly agree)∗ Perceived behavioral control PBC1 I believe that I have the ability to run against a red light in this situation. (Strongly disagree to strongly agree) Evans and Norman [39 ] 80.8 0.881 PBC2 For me, it is easy to run against a red light in this situation. (Strongly disagree to strongly agree) PBC3 I have control over whether to violate a red light in this situation. (Strongly disagree to strongly agree) Past behavior PB1 How often have you committed the red-light running as an e-biker during the last 12 months? (Never to frequently) Forward [29 ]; Potard et al. [45 ] 87.4 0.928 PB2 How often have you ridden faster than the legal speed limit during the last 12 months? (Never to frequently) PB3 How often have you committed the violating crossing as a pedestrian during the last 12 months? (Never to frequently) Prototype perceptions PS1 Prototype similarity How similar/different are you to/from the person your age and gender that regularly violates a red light? (Very different to very similar) Elliott et al. [47 ] 87.7 0.930 PS2 I am comparable to the typical person my age and gender that regularly violates a red light. (Strongly disagree to strongly agree) PS3 Do you resemble the typical person your age and gender that regularly violates a red light? (Definitely no to definitely yes) PF1 Prototype favorability How do you think about the typical person your age and gender who regularly violate a red light? Dynamic Elliott et al. [47 ] 89.4 0.940 PF2 Cool PF3 Childish∗ RLR intention RI1 In such a situation, how likely is it that you will run against a red light? (Extremely unlikely to extremely likely) Zhou et al. [40 ]; Ajzen [43 ] 82.2 0.928 RI2 In a similar situation in the future, do you intend to run against a red light? (Definitely do not to definitely do) RI3 In a similar situation in the future, what is the degree that you will avoid running against a red light? (Very weak to very strong)∗ RI4 In a similar situation in the future, how likely or unlikely is it that you will run against a red light? (Extremely unlikely to extremely likely) RLR willingness RW1 You will wait for the green light to cross in this situation. (Not at all willing to very willing)∗ Elliott et al. [47 ]; Gibbons et al. [49 ] 86.2 0.920 RW2 You will run against a red light when there is a gap in traffic flow. (Not at all willing to very willing) RW3 If other e-bikers around you are running against a red light, what is the degree that you will also run against a red light? (Very weak to very strong) RLR behavior RB1 I have committed the red-light running in the last month. (Strongly disagree to strongly agree) Elliott et al. [47 ] 82.3 0.892 RB2 How many times have you committed the red-light running over the last month? (None to lots of times) RB3 Overall, how often have you committed the red-light running over the last month? (Never to frequently)
