"Do Not Enter" signs erected, as the Fukushima Prefectural Police set up 65 roadblocks to control the entrance to the 20-kilometer radius evacuation zone which has now become the "no entry" zone.
(Don't use the regular roads, people.)
In addition, as reported here before, the select areas outside the 20-kilometer radius are now "planned evacuation zone" where the residents are "asked" to leave in about a month's time.
But wait, there's more. According to Yomiuri, the national government led by the increasingly unpopular Democratic Party of Japan coalition will announce the establishment of yet another zone which can be termed as "stay-indoor or evacuate on demand". In that zone, the residents will be required to be ready to comply with the government order - whether to stay indoors or evacuate - at a moment's notice.
Hmmm. Didn't they do this during the World War II? The US bombers are coming! (Air-raid sirens go off blaring.) Hide in the shelter!