Patent ID: 8452466
Filing Date: 2013-05-28
Classification: B61L

Abstract:
1. A method comprising: sensing, at a remote sensing unit positioned proximate to a pathway, a presence of one or more vehicles traversing the pathway; storing, in real-time, at the remote sensing unit, one or more sensing events indicative of the sensed presence of the one or more vehicles traversing the pathway and one or more time-stamps of times associated with the one or more sensing events, the one or more sensing events and the one or more time-stamps stored when a communication link between the remote sensing unit and a master accumulation unit is interrupted; and transmitting, asynchronously from the time at which the presence of the one or more vehicles was sensed at the remote sensing unit, a batch of one or more of the sensing events stored at the remote sensing unit and the one or more time-stamps associated with the one or more sensing events to the master accumulation unit when the communication link is opened between the remote sensing unit and the master accumulation unit after the communication link is interrupted.