The move comes after pressure from four senators, who asked the company in March to remove such apps.
Apple updated its app developer guidelines Wednesday. On Thursday, some DUI apps were still available in the App Store, but Apple usually gives developers a chance to update their apps so they can conform to the new guidelines before booting them off.
The apps often combine warnings about DUI checkpoints - supplied by other users of the app - with warnings about speed traps and red-light cameras.
An Apple spokesman had no comment on the change in the guidelines.
