Tower controller declined to issue a asde-X mandated go around to an emergency fuel aircraft on shor...

Narrative:

[A BE99] was inbound with low fuel. We were on runway 1L at the time due to low ceilings and visibility. Since [the BE99] must've been really low on fuel; he declared an emergency and requested runway 25L. I activated the crash phone and advised the rescue personnel of the situation. [The BE99] was on a 5 mile final for runway 25L when equipment started responding. (It was a very short time frame/notification from start to finish). As one of the county operations vehicles was approaching runway 25L; on runway 1R; at a high rate of speed; [the BE99] was short final. So guess what happens; the asde-X issues a 'go-around!!!' warning. I could see it was because of the fast target driving north on the intersecting runway and I know we do not have discretion available to us but jee-zo-pete are we supposed to send the guy with no fuel around? I think not! And we did not. So there! Give us some discretion with the asde-X tool.

Original NASA ASRS Text

Title: Tower Controller declined to issue a ASDE-X mandated go around to an emergency fuel aircraft on short final; noting the ASDE-X alarm likely occurred because of an emergency vehicle approaching the runway at a very fast speed.

Narrative: [A BE99] was inbound with low fuel. We were on Runway 1L at the time due to low ceilings and visibility. Since [the BE99] must've been really low on fuel; he declared an emergency and requested Runway 25L. I activated the crash phone and advised the rescue personnel of the situation. [The BE99] was on a 5 mile final for Runway 25L when equipment started responding. (It was a very short time frame/notification from start to finish). As one of the County Operations vehicles was approaching Runway 25L; on Runway 1R; at a high rate of speed; [the BE99] was short final. So guess what happens; the ASDE-X issues a 'GO-AROUND!!!' warning. I could see it was because of the fast target driving north on the intersecting runway and I know we do not have discretion available to us but jee-zo-pete are we supposed to send the guy with no fuel around? I think not! And we did not. So there! Give us some discretion with the ASDE-X tool.

Data retrieved from NASA's ASRS site as of July 2013 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	1072762
Time
Date	201303
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	King Air C90 E90
Operating Under FAR Part	Part 91
Flight Phase	Landing
Flight Plan	IFR
Person 1
Function	Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter Fuel Issue

Tower controller declined to issue a asde-X mandated go around to an emergency fuel aircraft on short final; noting the asde-X alarm likely occurred because of an emergency vehicle approaching the runway at a very fast speed.