Wireless Sensor Networks (WSNs) consist of large
number of sensor nodes. Each node is empowered by a communication
interface that is mainly characterized by low power,
short transmission distance and minimal data rate such as the
maximum data rate in ZigBee technology is 256 kbps, while
approximately the physical transmission range between 10 to
20 meters. Currently, WSN Technology is being distributed
over a large roadway of areas, in order to monitor traffic and
environmental data. This approach allows several Intelligent
Transport Systems (ITSs) applications to exploit the primary
collected data in order to generate intelligent decisions based
on earlier valuable selected information. Therefore, in this work
we present a MAC protocol that is suitable for WSN where its
nodes are assigned to a linear topology. The investigated protocol
is realized by adapting an already existing Jennic MAC protocol.
We demonstrate the validity of the MAC by building a complete
end-to-end road traffic monitoring system using 4 Jennic nodes
deployed in an indoor environment with the aim to prove the
MAC potential in meeting the expectations of ITS applications.
It is appropriate to mention that the proposed implementation
just considers stationary WSN nodes.