A month after detailing new rules that address tarmac delays and tardy airline operations, the Transportation Department launched an improved website for passengers to file complaints, and review carriers' on-time and baggage-handling histories.

Consumers also can get travel tips and gain access to DOT rules, enforcement orders and other documents.

The agency’s redesigned website at http://airconsumer.dot.gov also offers a form to file a complaint directly to the DOT about airline service.

The new site is available in Spanish.