INDIANAPOLIS (AP) – A runaway horse pulled a carriage with two tourists from Kentucky on a wild ride through downtown streets, until a teenager rode to the rescue in a pursuing taxi, leaped out and grabbed the horse’s reins.

The driver of the Yellow Rose Carriage was thrown from her seat when a van crashed into the buggy Sunday afternoon.

“The carriage driver lady just flew off the carriage,” said William Basler, 19.

Basler ran after the carriage to try to stop it. A taxi driver saw what was happening, slowed and told Basler to jump in. The cab chased and passed the carriage, and Basler jumped out, grabbed the reins and stopped the horse.

“It was just instinct,” Basler said. “I was just worried about the people inside of it.”

Police said carriage driver Kathleen Moriarty, 53, was briefly knocked unconscious but was not seriously hurt.

The passengers, Christie Dudley, 26, and Stacey Taylor, 28, of Louisville, Ky., complained of some pain but were not seriously hurt, said Sgt. Matthew Mount, spokesman for the Indianapolis Metropolitan Police Department. The horse was not injured.

Prosecutors on Monday charged the van driver, Timothy D. Carlson, 46, of Indianapolis, with felony possession of a controlled substance, and misdemeanor counts of operating a vehicle while intoxicated and operating a vehicle while never having received a license.

Carlson registered a 0.11 blood alcohol level on a portable breath test and a blood draw performed at the hospital will more exactly determine the level, a news release from the prosecutor’s office said. Carlson was being held in the Marion County Jail.