To further emphasize the importance of noise abatement procedures at Chicago O'Hare International Airport, signs have been placed at five locations around the Airport to notify pilots that noise abatement procedures are in effect from 2200 to 0700 (10:00pm to 7:00am) CST.

The signs state "Noise Abatement 2200-0700 LCL" and have been placed in the following locations:

• Runway 32L (Taxiways K/T12 and T/T12)
• Runway 27L (Taxiways S/S4 and M/M7)
• Runway 14R (Taxiways T/T1)

The signs serve as a last minute reminder to pilots departing the Airport of the Fly Quiet Program noise abatement procedure.