Nepal's army has deployed more helicopters and armed escorts along highways on Sunday in an effort to break a Maoist blockade.
Traffic was light again on the second day of the nationwide blockade.
The Maoists are protesting King Gyanendra's decision to dismiss the government, impose a state of emergency and suspend civil liberties, as well as putting the media under military control.
They rebels say they will continue until the monarch reverses his actions, which have prompted protests from many countries.
The king dismissed the government for failing to hold parliamentary elections and stop the communist insurgency.
The blockade began on the ninth anniversary of the rebels' violent uprising against the monarchy, during which more than 11,000 people have been killed.