SANTIAGO, Chile (AP) — Chile's president is sending a bill to Congress that would raise the minimum salary, one of a series of measures to try to contain nearly three weeks of anti-government protests.

The bill seeks to guarantee a minimum wage of about $470 a month.

President Sebastian Piñera signed the measure Wednesday as demonstrations continued with hundreds of honking cars and trucks traveling by caravan near the capital to demand a reduction in tolls.

The unrest began last month over a hike to subway fares. But it has grown into a massive movement demanding a broad range of changes, including improved social services and greater equality.

Chile's center-right government has responded with a host of proposed changes that must be approved by Congress.