The energy dissipation at roundabout system.

In this paper, we propose a cellular automata model to study the energy dissipation in the roundabout system. The energy dissipation and the phase diagram of the system in the space (α , β) are constructed. The energy dissipation profile (SE d (i)), and the effect of the rate γ (i.e., the rate of vehicles with no aimed exit point) and the probability P exit of choosing the next exit point to leave the circulating lane on the energy dissipation are shown. The simulation results show that the energy dissipation explains the nature of the phases, the quasi-free-flow (Q-FF) phase take place on the free flow phase because some vehicles decelerate at the entry point. Likewise, the results also indicate that the energy dissipation takes small values with the increases of the two probability γ and P exit which enhance the environmental statutes of the roundabout system. [ABSTRACT FROM AUTHOR]