  Vehicle platooning is considered as one of the key use cases for
vehicle-to-vehicle (V2V) communications. However, its benefits can be realized
only with highly reliable wireless transmission. As the 5.9GHz frequency band
used for V2V suffers from high congestion, in this paper, we consider the use
of the terrestrial TV frequencies for intra-platoon communications. In order to
be able to evaluate the potential of the new bands fully, propagation models
for V2V communications at such frequencies are needed. Therefore, this paper
reports new V2V propagation measurements and their modeling results.
Particularly, we propose a Double Slope Double Shadowing model as the most
accurate one, based on a comparison of various models using the Bayesian
Information Criteria. We also investigate the space-time autocorrelation
properties of the shadowing, which turned out to be dependent on the speed of
vehicles. The proposed path loss and shadowing model differs from the ones
proposed for the 5.9GHz band. Mostly, in favor of the TV band, as shown by,
e.g., no statistically significant impact of a blocking car.
