WASHINGTON – An estimated 740 people, a record, died in all-terrain vehicle accidents last year, the government said Thursday as it took a step toward oversight of the vehicles.

The estimated toll, which includes 470 documented cases, compares with an estimated 617 deaths in 2003, and estimates between 538 and 599 annual deaths in the previous three years, according to a report from the Consumer Product Safety Commission on Thursday.

Also, an all-time high of at least 136,100 people went to the hospital last year for injuries involving the four-wheel motorcycles that have a wide seat and low stand, and a third of those hurt were younger than 16.

In 2003, there were at least 125,500 injuries.