DDPG	Deep Deterministic Policy Gradient
HP	Human Preference
V2X	Vehicle-to-Everything
RRT*	Rapidly exploring Random Tree star
OU	Ornstein–Uhlenbeck
TTC	Time to Collision
MDP	Markov Decision Process
ReLU	Rectified Linear Unit
FPS	Frames Per Second
HIL	Hardware-in-the-Loop
SAC	Soft Actor–Critic
PPO	Proximal Policy Optimization