After the municipality of Luxembourg City announced on Wednesday that it would block the entries to the Grand Rue with concrete barricades, the safety measure was implemented on Thursday morning. The blocks remain in place as a provisional solution until retractable metal pillars can be installed.
RTL Today article: Car drives into crowd in Trier - 5 deaths including a nine-week-old baby, 18 injured including a Luxembourger (2 Dec. 2020)
RTL Today article: Luxembourg City to secure Grand Rue with concrete blocks (2 Dec. 2020)