I really like how the light version looks, but it has some legibility issues. Since readability is more important for users than visual appeal, I think the dark version is the better option.
BTW, I initially voted for the light version, but after analyzing both options more closely, I changed my mind 😄
Voted Dark. On a dashboard watching trucks move from gate to dock all day, dark is easier on the eyes, and the 3D bars and route lines glow against it. Light is clean, but dark makes the live movement the focus.