Buzău is crossed by national road DN2 (part of European Road E85), which connects the city to Bucharest to the South and to Râmnicu Sărat and the main cities of Western Moldavia to the North. National road DN1B (European Road E577) branches out of DN2 in Buzău. This road connects the city to Ploiești. In the North of the city, DN10 also branches from DN2. It crosses the Carpathians at their South-Eastern curvature through Buzău Pass towards Brașov. The South of Buzău is also crossed by national road DN2B, which branches from DN2 în the neighboring commune of Costești, leading eastward to Galați and Brăila. In Buzău, county road DJ203D branches from DN2B. It leads South to Țintești and Smeeni, where it ends in DN2C, a road along which it helps connect Buzău to Slobozia.