Cvg local controller reports of a pilot missing his turn-out off the runway. Controller instructs pi...

Narrative:

Aircraft X landed runway 36c with an RVR of 1200. He was instructed to taxi via D; J and south to the ramp. The pilot read back the correct instructions. I then advised him to turn right on north off of south [as] if he was parking on the north ramp. He again read back the instructions correctly. Other aircraft were cleared to land and given instructions. Aircraft X then asked if he was cleared to cross runway 27. I repeated his taxi instructions and then realized he had missed his turn onto taxiway J. I then turned him on runway 27 and gave him instructions to the ramp. I knew vehicles were on the runway 27 doing sweeping. They were using 3 different call signs and I checked with my scratch pad to make sure of the 2 remaining call signs because 1 vehicle had exited. As I was getting ready to advise the vehicles one keyed up and said I had an aircraft on the runway. I advised he was using it to taxi to the ramp. A vehicle said he drove into the grass to clear the runway. Upon further review they stated he was taxiing very fast and estimated about 50mph. I advised the flm of the situation.my recommendation would be that when multiple vehicles are on a runway give me just one call sign to communicate with. If one leaves and another call sign has to be used so be it. I spent too much time making sure my notes were correct instead of controlling the situation. When snow removal is in progress this is almost exclusively how it is done.

Original NASA ASRS Text

Title: CVG Local Controller reports of a pilot missing his turn-out off the runway. Controller instructs pilot to taxi on parallel runway where sweepers were working. Before Controller could advise the vehicles; a Sweeper calls the Tower to alert him of an aircraft on the runway.

Narrative: Aircraft X landed runway 36c with an RVR of 1200. He was instructed to taxi via D; J and S to the ramp. The pilot read back the correct instructions. I then advised him to turn right on N off of S [as] if he was parking on the north ramp. He again read back the instructions correctly. Other aircraft were cleared to land and given instructions. Aircraft X then asked if he was cleared to cross runway 27. I repeated his taxi instructions and then realized he had missed his turn onto taxiway J. I then turned him on runway 27 and gave him instructions to the ramp. I knew vehicles were on the runway 27 doing sweeping. They were using 3 different call signs and I checked with my scratch pad to make sure of the 2 remaining call signs because 1 vehicle had exited. As I was getting ready to advise the vehicles one keyed up and said I had an aircraft on the runway. I advised he was using it to taxi to the ramp. A vehicle said he drove into the grass to clear the runway. Upon further review they stated he was taxiing very fast and estimated about 50mph. I advised the FLM of the situation.My recommendation would be that when multiple vehicles are on a runway give me just one call sign to communicate with. If one leaves and another call sign has to be used so be it. I spent too much time making sure my notes were correct instead of controlling the situation. When snow removal is in progress this is almost exclusively how it is done.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1245767
Time
Date	201503
Local Time Of Day	0001-0600
Place
Locale Reference	CVG.Airport
State Reference	KY
Environment
Flight Conditions	IMC
Light	Dawn
Aircraft 1
Make Model Name	Widebody Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Route In Use	None
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 21
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Ground Excursion Runway

Cvg local controller reports of a pilot missing his turn-out off the runway. Controller instructs pilot to taxi on parallel runway where sweepers were working. Before controller could advise the vehicles; a sweeper calls the tower to alert him of an aircraft on the runway.