  In this letter, we characterize the load on the cellular macro base stations
(MBSs) due to vehicular users modeled by a Poisson line Cox process (PLCP).
Modeling the locations of MBSs by a homogeneous 2D Poisson point process (PPP),
we first characterize the total chord length distribution of the lines of the
Poisson line process (PLP) intersecting the typical Poisson Voronoi (PV) cell.
Using this result, we derive the exact probability mass function (PMF) of the
load on the typical MBS. Considering the computational complexity of this
expression, we propose an easy-to-use approximation for the PMF that is also
remarkably accurate. Building on this result, we also compute the PMF of the
load on the tagged MBS that serves the typical vehicular user. This result
enables the characterization of the rate coverage of the typical receiver in
the network, which is also included as a useful case study.
