Concrete road blocks have been placed outside The Louvre Museum in Paris. /Caixin Photo

The local authorities have placed concrete blocks to protect pedestrians from the threat of vehicles being used as weapons. /Caixin Photo

Recent spate of cars and trucks ramming into pedestrians in various cities have killed a lot of people. Vehicles are frequently as a tool of terrorism, according to reports. /Caixin Photo

The Louvre Museum is not the only place that has been secured with temporary concrete barriers. Other cities have also adopted similar measures /Caixin Photo