Yes ,that is correct here is prohibited, but with hidden install,
and with alp set on 3 sec you will be fine. I'm not speed chaser
on highway is 130km/h allowed, i drive 150-170 for me is that shield time enough .
If you drive too fast that will everyone notice and no detector or jammer will help you.
Of course risk is always in such cases present , here is better to go with hidden install
I had more risk to get caught when i used redline, these days believe me people know diference
Between navi device and something other
Cheers