This paper presents for the first time, a critical assessment of Athens Traffic Restrictions (ATR) by analyzing data on traffic volumes and speeds from the Traffic Management Centre of Athens, as well as ticket validations from Athens public transport operator (OASA S.A.). ATR were reinstated on 24 October 2021 as a response to increasing congestion, due to heightened social activity in the aftermath of the COVID pandemic. The analysis showed an increase in average speeds and reduction in congestion inside ATR throughout the study period. Outside ATR, no conclusive evidence was found supporting a persistent impact of the measure on traffic. The reinstatement of ATR contributed to the increase in metro ridership. Transport and local authorities should set clear goals and appropriate KPIs to monitor the success of the measure in the long term. The potential of mode switch from cars to public transport is promising and should be taken into account in this goal setting. Enhancing the implementation of ATR with micromobility options and MaaS solutions inside the restricted area can further boost compliance and strengthen the uptake of public transport.