FAST does not continually save records of all
database changes. We cannot guarantee that the plan you will receive is the actual database in
effect at the time in question. There are numerous events
not tracked which can significantly alter the operation and
sequencing of a traffic signal. These include emergency vehicle
preemptions, detector failures, and lack of detector calls for specific
traffic movements. In addition to these events, technicians from local agencies that are
responsible for maintaining the traffic signals sometimes make timing
changes in response to site-specific timing concerns. We do not track these
changes. If local agency technicians changed timing at the
intersection it will not be reflected in the attached database.
