SAO PAULO: Demonstrators took to the streets of the Brazilian city ofSao PauloFriday for a second day of protests over higher public transportation prices.

Scores of young protesters blocked traffic on an expressway in a western district before police intervened, firing tear gas and rubber bullets to disperse them.

Television images showed demonstrators, many of them flag-waving students, also marching down streets in other parts ofBrazil's sprawling economic capital, home to 11 million people, as police kept a close watch.

At issue is a seven percent hike in bus, metro and train ticket prices from $1.5 to $1.6.

Late Thursday, about 2,000 demonstrators disrupted traffic in several districts, with some vandalizing bus stops and metro stations while others burned garbage cans.

Fifty people were hurt and 15 detained in ensuing clashes with police. Most of those held have been released.

Thursday also saw protests in other Brazilian cities such asNatalin the northeast,Goianiain the center,Salvadorin the northeast andRio, where two people were injured.