They aren't underground. The people travel with the bus, they have hours establish and they are very punctual. The monit sheirut are cabs that they share with another people. they are cheaper tahn the comun cabs but more expensive than the buses. Before you take a cab argue with the cauffeur the price because they haven´'t clock.
Rates for ride in the city
One ride 5.50 NIS
Two rides 6.30 NIS (within 1 hour)
Two rides - transfer ticket (MAAVAR) 6.30 NIS (within 1 hour)
Jerusalem City Tour - 9.90 NIS