  In the Nagel-Schreckenberg model of vehicular traffic on single-lane highways
vehicles are modelled as particles which hop forward from one site to another
on a one dimensional lattice and the inter-particle interactions mimic the
manner in which the real vehicles influence each other's motion. In this model
the number of empty lattice sites in front of a particle is taken to be a
measure of the corresponding distance-headway(DH). The time-headway(TH) is
defined as the time interval between the departures (or arrivals) of two
successive particles recorded by a detector placed at a fixed position on the
model highway. We investigate the effects of spatial inhomogeneities of the
highway (static hindrances) on the DH and TH distributions in the steady-state
of this model.
