Routing also is used to avoid areas of anticipated congestion.
Hiking trails are being moved to avoid areas at risk, said Herbert Zurbrügg, Grindelwald's town secretary.
He said he thought he knew the reason: to avoid areas that have safety issues.
They want mining companies to avoid areas where their operations will severely contaminate or destroy local water supplies.
It had been expected that elk would eventually learn to avoid areas in which wolves were found.
"If you were able to avoid areas where there was substantial difficulty, you could find some spots in the market where you could get pretty good performance".
People playing the popular smartphone game Pokémon Go in Bosnia have been urged to avoid areas littered with unexploded mines left over from the 1990s conflict.
But they do note that Syrian aircraft have tended to avoid areas farther east where the United States is regularly flying airstrike missions against the Islamic State.
Although the teams are frustrated, Lt. Col. Kenneth M. DeTreux, the battalion's commander, said they still influenced the insurgents, who tend to avoid areas that are watched.
Last night, West Yorkshire Police asked people to avoid areas in the town, saying that waves from driving through the water could damage houses.
Transport for London is advising drivers to avoid areas near the event routes in London today until 6pm and in the affected parts of Surrey on Sunday.
