The present invention is directed to a pathway alerting system, comprising: at least two alerting devices (30), disposed distantly from each other, in line, along a pathway (100), each alerting device (30) comprising: an alarm; a sensor (35) for detecting a transient vehicle; a communication module with at least one adjacent alerting device (30); and a mechanism for: upon detecting a transient vehicle by the sensor (35), instructing via the communication module at least one adjacent alerting device (30) to turn on its alarm.