Fig. 1: The simulation-to-reality (Sim-to-Real) solution to achieve a long, tight, and stable platoon.

a Centralized topologies may reduce practicability and diminish the robustness of long vehicle platoons compared to decentralized topologies. b Underlying exogenous/endogenous stochasticity may introduce a gap between simulation and real-world operation. c Based on the simulation-based optimization method, the upper-level controller of CAVs can be further optimized within a realistic simulation environment that incorporates the Sim-to-Real gap.