TRENTON, N.J. (AP) - Minorities driving the New Jersey Turnpike are still the majority of those stopped and arrested by troopers, but authorities now say court-ordered reforms can track officers who target them.

According to records released Tuesday, nearly half of all drivers stopped by troopers on the turnpike from Nov. 1 through April 30 were minorities. Blacks and Hispanics accounted for more than 70 percent of those arrested, the report found.

Overall, the figures changed little since state and federal authorities started monitoring trooper activity in an effort to end racial profiling.

But for the first time, federal overseers were able to identify individual trooper behavior. They watched more than 400 videotapes from traffic stops and caught some violations of procedures designed to protect minority drivers.

Authorities identified nine ``incidents'' - including one where an officer allegedly threatened a black driver with a search by drug dogs. Another officer appeared to interrogate a black driver after a routine traffic stop, according to the reports filed in federal court.

``We now have the capacity to do what I've always said we need to do, which is to look at the conduct of troopers on an individual basis,'' Attorney General John J. Farmer Jr. said.

The state has begun disciplinary action against some troopers who have been removed from road patrols, Farmer said. No names were released in the report.

The troopers' union issued a statement Tuesday supporting its members, saying they are the most closely watched law enforcement force in the country.

``Our every moment of the day is documented in writing. Every activity is recorded, reported and retained. Every interaction with every motorist is audiotaped and videotaped,'' said the statement by the State Troopers Fraternal Association of New Jersey.

``If the attorney general's office has a problem with a stop, let them go to the videotape, which will prove these criticisms baseless.''

Also included in the report for the first time were details of what happens after a driver is stopped, including whether a car was searched and what sort of force was used.

Of the 44,000 drivers stopped on the turnpike, officers asked to search only 87 cars. Nearly all of those drivers were minorities.

Statewide, white drivers accounted for 70 percent of motor vehicle stops by state police and about half of all arrests.

New Jersey agreed to the federal monitoring in December 1999, more than a year after two troopers fired on a van carrying four unarmed minority men on the turnpike, wounding three.

The incident escalated the controversy over allegations of racial profiling. In April 1999, state authorities admitted that troopers had engaged in racial profiling.