Investing in sleeping bays' What is a sleeping bay? 1. It is a designated area for a selection of licenced cars to gather together, for a rest stop, or for other purposes such as sleeping for a duration or time slot. 2. Should we invest? 3. With the right precautions', such as, car licenced with a credited sleeping permit, with night securities' and a 60 mile radius for each allocated area with a 25 provisional spacing unit, I don't see why not.