"Red Light" or "Redlight"

Sam Penrod's excellent page on POI's (http://www.gpsinformation.org/penrod/poiloader/poiloader.htm...) seems to indicate that "red light" needs to be displayed as one word in order to trigger a proximity alert. Or can there be a space between "red" and "light".

I've downloaded several Red Light POI's and they all have Red Light displayed as 2 words.

-Tom