PARIS (AP) _ One of France's high-speed trains broke its own world speed record, traveling at 317.4 mph.

The new record set Wednesday was one-tenth of a mile an hour better than the previous record of 317.3 mph, set last week by the same train.

The records were set during a series of trial runs by the government-owned railroad to test new equipment, materials and track.

Last week's record marked the first time any train has traveled faster than 300 mph. The tests are taking place on a stretch of track near Tours in central France.

On regular passenger runs, the high-speed trains normally travel at a maximum of 180 mph.