Flight crew reported confusion with regard to taxiway markings at cid airport.

Attributes
ACN	789304
Time
Date	200806
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cid.airport
State Reference	IA
Altitude	agl single value : 0
Environment
Flight Conditions	Marginal
Weather Elements	other
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : private
Experience	flight time last 90 days : 250 flight time total : 750 flight time type : 340
ASRS Report	789304
Events
Anomaly	non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Myself and the captain got confused about a marking on the taxiway. The marking is a non-movement boundary. The marking comes 1/2 way in a turn and is a little difficult to clearly identify between a runway boundary marking or a non-movement area. We stopped briefly because runway incursions are a serious safety hazard. I would recommend putting a sign nearby stating leaving non-movement area. The marking is at cid airport while taxiing to runway 13 (next to the crash fire rescue equipment). I questioned ground and he said a lot of people get confused. Callback conversation with reporter revealed the following information: the reporter stated that as the flight crew approached the taxiway markings; they felt that they should hold short for fear of a runway incursion. When queried; ground control informed them that the markings identified the boundary of the non-movement area; and the runway hold short line was adjacent to the runway threshold.

Original NASA ASRS Text

Title: FLT CREW REPORTED CONFUSION WITH REGARD TO TXWY MARKINGS AT CID ARPT.

Narrative: MYSELF AND THE CAPT GOT CONFUSED ABOUT A MARKING ON THE TXWY. THE MARKING IS A NON-MOVEMENT BOUNDARY. THE MARKING COMES 1/2 WAY IN A TURN AND IS A LITTLE DIFFICULT TO CLEARLY IDENT BTWN A RWY BOUNDARY MARKING OR A NON-MOVEMENT AREA. WE STOPPED BRIEFLY BECAUSE RWY INCURSIONS ARE A SERIOUS SAFETY HAZARD. I WOULD RECOMMEND PUTTING A SIGN NEARBY STATING LEAVING NON-MOVEMENT AREA. THE MARKING IS AT CID ARPT WHILE TAXIING TO RWY 13 (NEXT TO THE CFR). I QUESTIONED GND AND HE SAID A LOT OF PEOPLE GET CONFUSED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE REPORTER STATED THAT AS THE FLT CREW APPROACHED THE TXWY MARKINGS; THEY FELT THAT THEY SHOULD HOLD SHORT FOR FEAR OF A RWY INCURSION. WHEN QUERIED; GND CONTROL INFORMED THEM THAT THE MARKINGS IDENTIFIED THE BOUNDARY OF THE NON-MOVEMENT AREA; AND THE RWY HOLD SHORT LINE WAS ADJACENT TO THE RWY THRESHOLD.

Data retrieved from NASA's ASRS site as of May 2009 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.