Having signs on the side showing complex information (how is that metric defined, exactly?) unrelated to the task at hand (driving safely) won’t help much. Sho

Having signs on the side showing complex information (how is that metric defined, exactly?) unrelated to the task at hand (driving safely) won’t help much. Showing relevant information with a clear impact on the driver has proven to work effectively: have color-coded feedback telling you that your insurance premium just went up when you drive too fast, erratically, too close to the car in front don’t look ahead, or turn without checking behind the mirrors and behind you.