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Yes. I know a lot of people who start their engine while waiting for the garage door to open.
by dx034 8y ago
Yes. I know a lot of people who start their engine while waiting for the garage door to open.
- Dylan16807 8y agoThe car's going to make a very small amount of CO in those fifteen seconds. If you take 'never' as 100% absolute then it's going to really distort your numbers, if your goal is counting how many people aren't aware of and safe around the danger.
- nkrisc 8y agoThe reason these sort of rules are absolute "never" are not because you'll end up with dangerous amounts of CO in 10 seconds, but because it makes it a simple rule to follow. Is 10 seconds OK? 15? 30? When does it stop being OK? Following an absolute rule eliminates much of the grey area where mistakes are made.
- Dylan16807 8y agoIt stops being okay when you're not opening the door "at the same time". Such a rule has minimal gray area and shouldn't cause mistakes.
- dx034 8y agoWhat if you open the door but the remote doesn't work? Then you go back inside and look for new batteries, meanwhile the car keeps running. Those cases will be rare but can occur. And switching on the car once the door is open costs at most 2 seconds.
- Dylan16807 8y agoWhat if you already opened the door and you shut it for a reason or by mistake? No plan is perfect. But opening the door a few seconds before is essentially equal in danger to opening it a few seconds after.