Observational item categorisation
| Observational items | Categorisation |
|---|---|
| Weather | Sunny, cloudy or rainy |
| Day of week | Weekday or weekend |
| Time of day | Morning or afternoon |
| Average E-bike traffic volume per minute | Basic (≤10 E-bikes), low (11–15 E-bikes), medium (16–20 E-bikes) or high (>20 E-bikes) |
| Presence of a traffic controller (traffic policeman or traffic police assistant directing vehicular and pedestrian traffic) | Yes or no |
| Type of E-bike | Equipped with pedals or otherwise in scooter form |
| E-bike registration status | Registered with registration plate displayed or otherwise unregistered |
| E-bikers' gender | Male or female |
| E-bikers’ occupation | Couriers or not |
| Carrying passengers | Yes or no |
| Carrying oversized cargo (>60×40×20 cm3) | Yes or no |
| Riding in a motor vehicle lane | Yes or no |
| Running red lights | Yes or no |
| Riding in the opposite direction (ie, facing oncoming traffic) | Yes or no |
| Mobile phone use | Yes or no |
| Helmet use | Yes or no |
| Wearing leather gloves | Yes or no |
| Wearing other motorcycle protective clothing | Yes or no |
E-bike, electric bike; E-biker, electric biker.