We already have speed restrictions without a special module. I'm trying to get rid of the restriction and only have it active during combat (etc) and around stations. As to how the technology works? It works on the principle of handwavium. If you want to keep the current system with restricted speed, well, good for you.
At 1AU the sun has such a significant effect on gravity that not only does it keep the earth in orbit around it, but it also causes us to orbit around it. The only reason we don't fly off the earth is that we're close enough to the earth that the sun's gravity doesn't pull us away.
Let me put it this way, it takes the ENTIRE sun, that is 1.989 * 10^30 kg to keep the earth orbiting where it is. The earth has a mass of 5.972 * 10^24 kg. That is a difference of several powers of 10. It also takes the ENTIRE earth to pull you down with 9.81 m/s^2 of acceleration.
Also, the mass of a stock anaconda is 1066 metric tonnes (I assume metric at least). Most asteroids we see are 5x the physical size of a conda at most. Do the math. At 100 m (really g close), your worst case asteroid (assuming it has the same density as a conda), results in a gravitational force of .0355 newtons. Statistically insignificant if I ever saw it.
As for stars? Just change your inertial frame of reference. Simple fix, no coding required. Just look at us on earth. When sitting down, we are moving some 460 m/s around the earth's core. Or some 108,000 km/h around the sun. Or about 720,000 km/h around the galactic center. All of that, just by changing your inertial frame of reference. So, even at 0 m/s in normal space, we are still moving at whatever orbital velocity we need to. The best place to see this is in an RES. The asteroids don't move away from us, but RESs do move, and we move with them.
You still haven't sold me on the restriction module. What is the point? What benefit does it provide? Why do I want one?