21.   Reports from the scene indicated the accident may have happened after traffic slowed from an earlier accident, which happened just after midnight.

22.   Rush-hour traffic slowed as traffic lights failed across San Juan.

23.   Traffic slowed to a grind and police struggled to maintain order during three labor protests in this South American capital city Tuesday.

24.   Traffic slowed and snarled around the scene before the Independence Monument on the Paseo de la Reforma.

25.   Traffic slowed to a crawl and security was tight in the Belarussian capital, where the streets were lined by policemen and soldiers with automatic weapons.