**Algorithm 3** Mix context at higher density.

**Initialization:** *V<sup>i</sup>* : Any vehicle *i*, *Tx*: Transmission range, *NeighThreshold*: Neighbor threshold, *SPR*: Speed range, *TimeLimit*: waiting time limit, *D*: vehicle direction **Input:** *SPR*, direction, *NeighThreshold*, *T<sup>x</sup>*

**Output:** Successful pseudonym change process



19: **end for**

