OHL Brasil held a conference call to discuss its 1Q11 earnings results. The document provides an overview of key performance metrics for OHL Brasil including traffic growth, toll tariffs, gross service revenue, EBITDA, and financial results for the quarter. Traffic on OHL Brasil's state and federal concessions grew 20.3% and 18.5% respectively in 1Q11 compared to 1Q10. Gross service revenue increased 19.3% to R$601.6 million in 1Q11 driven by toll revenue growth of 18.6%. EBITDA grew 15.9% to R$212.8 million in 1Q11 compared to 1Q10. The net financial result was negatively