The Moped Riders & Motorcyclists Thematic Report of the E-Survey of Road Users’ Safety Attitudes (ESRA) has been published with the active contribution of NTUA, containing a wealth of information on road safety in 39 countries across Europe, America and Asia-Oceania, based on the ESRA3 survey. This Thematic ESRA3 Report describes the frequency of riding a moped or a motorcycle, the use of infrastructure, the road crash involvement, the acceptability of unsafe traffic behaviour, the safety perception of using moped and motorcycle, the rates of self-declared behaviour and factors associated with risky riding behaviours. Self-declared risky behaviors among moped riders and motorcyclists are influenced by gender, age, beliefs, and living conditions, with females, older individuals, urban residents, and those supporting stricter regulations reporting lower likelihoods of drink-riding, speeding, helmetless riding, distracted riding, drug-related riding, or riding too fast, while those who find these behaviors acceptable are significantly more likely to engage in them, often by magnitudes ranging from 6 to 19 times.