Original sentence: Issues to be solved, besides consumer and voter acceptance, include difficulty in obtaining accurate measurements without inconvenience, and a need to achieve Six Sigma (6σ) reliability, in order not to interfere with vehicle usability.Proposals  have been made to install IIDs on all new vehicles, set to the legal limit for the driver
Edited sentence: Issues to be solved, besides consumer and voter acceptance, include difficulty in obtaining accurate measurements without inconvenience, preserving adults’ ability to responsibly consume adult beverages, and a need to achieve Six Sigma (6σ) reliability, in order not to interfere with vehicle usability.Proposals  have been made to install IIDs on all new vehicles, set to a level which is significantly less than the legal limit