Metropolitan police department decided to ban some roads (Highway and normal roads) in emergency situation such as earthquake etc..
It’s supposed to let ambulance and fire truck go smoothly, but it means you can not escape when you really need to evacuate. (Source)
For the readers living around in Tokyo, I would like to post the maps of the roads you can’t use.
Now that the Spent Fuel Pool of reactor 4 is in the crisis, it is important to know that you can not use your car to move.
Colored roads will be banned.