Sometimes due to some events like the construction of a bridge, an excavation or a festivity, some roads are closed. It would be useful to be able to mark the closed roads on the map in order to avoid them, also, to have the ability to program the time period when these roads won't be available.

The rest of the users could receive a notification of the blocked track, so they can accept and even vote for the notification, so they can avoid the route and skip false warnings.