  The role of wireless communications in various domains of intelligent
transportation systems is significant; it is evident that dependable message
exchange between nodes (cars, bikes, pedestrians, infrastructure, etc.) has to
be guaranteed to fulfill the stringent requirements for future transportation
systems. A precise site-specific digital twin is seen as a key enabler for the
cost-effective development and validation of future vehicular communication
systems. Furthermore, achieving a realistic digital twin for dependable
wireless communications requires accurate measurement, modeling, and emulation
of wireless communication channels. However, contemporary approaches in these
domains are not efficient enough to satisfy the foreseen needs. In this
position paper, we overview the current solutions, indicate their limitations,
and discuss the most prospective paths for future investigation.
