→Manual locks: Add mention of "trojan horse" PURs
*''Exposure'' reflects the number of ranking editors likely to have editing access to the location. It is highest at large international airports and popular international destinations.
*''Risk'' is the likelihood that an intentional construction (or omission) may be mistaken for an oversight. Risk is greatest for complex constructions that involve subtle knowledge or difficult tradeoffs, or that appear to depart from common practice. Risk also accompanies constructions that may appear incorrect due to obsolete street-view data, inaccurate GPS Points, or out-of-date or misregistered aerial imagery. Sometimes even an ordinary red turn restriction may be at risk due to careless use of basemap editing tools. Risk may be reduced with the use of a [[Map comment|Map Comment]], but this is no guarantee of protection; some editors may not have their Map Comment layer enabled, and others relying on automated tools may not be looking.
*''Value'' is highest for popular and infrastructure-critical roads and destinations.