More than 2,000 minivans and passenger vehicles carry special education and other students in Minnesota every year, and the only requirement for their drivers is to have a valid regular driver's license.

Those drivers are not subject to the rigorous requirements set for drivers of school buses, said Capt. Ken Urquhart, pupil transportation safety director for the State Patrol. State and federal laws require school bus drivers to have annual physicals, undergo random drug and alcohol tests and criminal background and driving record checks.

The driver of one van -- known as a Type III vehicle -- had had five speeding tickets in 10 years and was smoking marijuana before he drove a 14-year-old Scandia girl home from school in May. On that May afternoon, he hit the rear end of a school bus, killing himself and his passenger. That has started calls for changes in state laws by a few legislators and others.

"There's room for improvement," Urquhart said. He said state officials and a few legislators have talked about tougher requirements for Type III drivers.

Urquhart said the state pays more attention to the vans, taxis and other passenger cars carrying students than to the drivers.

Urquhart, who oversees the patrol's annual inspections, said 2,400 such vehicles were checked last year, most of them minivans carrying special education students to classes outside the student's school district, although some districts in rural Minnesota pay parents to drive a few students to school from remote areas.

Special ed and other students not riding regular school buses "deserve to be transported safely by people we can rely on who are not impaired and are capable of operating the vehicle," Urquhart said.

The May crash in rural Washington County killed van driver Scott Wendt, 30, and his sole passenger, Amanda Berglund, 14. The Forest Lake Schools student was riding home from a St. Paul school offering classes for hearing-impaired students. Her parents, Bill and Karen Berglund, said they are writing to legislators asking for regulations to require such van drivers to meet standards set for bus drivers.

"They need background tests and drug testing and the same training as school bus drivers," Karen Berglund said.

Legislators are starting to talk about the issue of increasing safety not only for students riding in vans and other vehicles, but also on school buses.

"I think we need to look at strengthening the licensing procedures so just not anybody is jumping into these vehicles," said state Sen. Rick Olseen, DFL-Harris.

That may include measures such as requiring a different kind of license, drug testing and more training for Type III vehicles. He said he would like to stop using regular vehicles and use school bus-strength vehicles for transporting students.

One issue is the cost to support more regulation, he said.

Sen. Paul Koering, R-Fort Ripley, said he believes transportation companies will want to work with legislators on the issue.

"Obviously, we've got to protect people that are riding in these vans," Koering said. "What we have to do is get all sides together and talk about it and try to figure out ... how to fix what could be a potential problem."

Wendt was a driver for Twin City Transportation, which Forest Lake Schools hires to drive about 13 students a year in eight minivans to schools offering special education classes in the St. Paul area, said district transportation director John Gray. Although schools may impose additional requirements on drivers, the district has not done so for Twin City Transportation, he said. He said Wendt's crash was the only Type III accident involving a student that he could recall in his 14 years with the district.

Twin City also supports stronger requirements for its minivan drivers, and has started to require that its minivan drivers meet the same standards as school bus drivers.

"Anybody who's doing this work should be required to get a school bus endorsement," said Mike Weidner, the company's attorney. But that probably wouldn't have changed what happened, he cautioned.