  Optimal traffic-light settings are generally hard to obtain, certainly for
actuated access control of an intersection. Typically, computationally
expensive (microscopic) simulations or complicated optimization schemes are
required to find those optimal settings. Based on recent developments regarding
the Fixed-Cycle Traffic-Light (FCTL) queue, we propose a new allocation scheme
for actuated access control at isolated intersections. Our scheme allows for
very easy computations and an intuitive explanation, which are both based on
the Central Limit Theorem, a key tool in probability theory. The desirable
properties observed for the FCTL queue can also be achieved in case of actuated
access control of an intersection. We show this by means of simulation of the
underlying queueing model, because the actuated control defies an exact
analysis so far. We also observe the same type of results employing the
microscopic traffic simulator SUMO. The intuition and insights obtained might
also open up new possibilities for obtaining optimal actuated access control
for a network of intersections.
