This attribute controls the behavior of the Dynamic Speed Reporting mechanism. If its value is empty then the mechanism is disabled and neither increases nor decreases are reported. Otherwise, the attribute may contain up to seven threshold levels which are used to control the reporting of speed increases. Speed decreases are always reported immediately. If the measuredSpeedToIf increases such that it reaches one of the threshold levels which is greater than the last reported speed, the Trunk starts the speedReportingHoldOff timer. If the speed remains above this threshold until the timer expires, the Trunk component then reports the measuredSpeedToIf; otherwise the increase is not reported.