Nine bus lines will change course and four streets in the Salaria-Parioli area of town will be closed to traffic this week for a security clampdown during United States President George W. Bush visit to Rome.

Stretches of Viale Gioacchino Rossini, Via Aldrovandi, Via delle Tre Madonne and Via Bertoloni will be closed off from Wednesday until Friday while the president stays at the American ambassador