We present a new traffic CA model focused on an estimated time for a following vehicle to catch up with the one ahead (Time-to-Collision: TTC), and investigate characteristics of the model with the simulation. We also analyze analytically the possibility of a collision between two cars in this model. The model is simulated under open boundary conditions and each car is parallel-updated. We draw some fundamental diagrams of the traffic flow with the simulation. In this figure, we find two distinct phases: a free flow and wide moving jam. And between the two phases, the region where the dots spread sparsely is seen clearly. In addition to this, by using different values of an important parameter, we can see the several patterns of the trajectory of vehicles. Based on these findings, we believe it is possible for this model to reproduce synchronized flow.
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