A method for logging communication includes determining when a target user is active and identifying an access device and private Internet Protocol address associated with the target user when the target user is active. The timing circuit contains a phase locked loop that, during a first interval, checks whether a control signal in the phase locked loop is between a maximum allowed value and a minimum allowed value. An expected level of access to a network along the route is determined. The occupancy model is based on a demand model and a sensor noise model which accounts for behavior of the non-reporting sensors. The support post is adapted to receive the guardrail such that the rail face of the guardrail runs generally perpendicular to the strong direction such that the support post resists an impact on the rail face of the guardrail and yields to an impact force on the end of the guardrail.