A unique and efficient system model is proposed for sensor networks
to create sensor-smart highways. The approach first considers
various cell geometries encountered with two-dimensional roads, and
then extends the same to three-dimensional roads. Mathematical
relations describing each type of cell are derived, and the analyses
indicate the numbers and positions of sensor nodes needed in each
cell of a certain type. We then propose algorithms for computing
the deployment positions of sensor nodes on roads by describing them
as consisting of cells of different geometries. We also validate
the approach by computing a sensor deployment using real geospatial
data.