How to count available hours past the 8th day on a 8day/70hours week?

On day 9 you have your available 3, plus how many you worked on day 1, which you state was 4. You have 7 hours available on day 9. The driving and on duty don't matter, so long as you don't violate the 8 or 11 rule, which would be separate. When you total the hours for the day it all counts the same against your 70. You could be driving until you are at the 7th hour on day 9, then go on duty, and you would still be legal. So long as you do not drive past your 70th total hour in 8 days.

 

I always found it retarded how what I did 8 days ago effects how much I can work now.

 

I am saying every day that you work, you have to stay within your 8,11,14 hour rules as far as how many you are allowed to drive. The 70 hour is total on duty time for the week. Every day you add up line 3 and 4, and get a total for the day. That is the amount of time you worked for that day. In your example, you have 7 available on day 9 (day 1 was 3driving+1onduty=4) and total of day 1-8 was 67. 3+4=7. You could get out, do your pretrip for 15 minutes, and drive 6 hours 45 minutes. But you better not be driving for 6 hours and 46 minutes, or you'd be in violation.

 

this is how I do it. My logs don't have the seven and eight day count so I haft to do it on a separate peace of paper. Your only counting seven days your eigth day falls off giving you hours for your following day hopefully. I write mine horizontally starting from the first day to my most recent.
When I get my eighth day in I draw a line at the top wich tells me in an easy way that those hours have fallen off.

I continue to right lines as the days go by until I'm able to get a restart where I'll then start over with a fresh 70. in this way you always have record of both eight and seven day past hours.

 

Now if you total your eight day's an its pretty close seventy you much in good shape for the fallowing day chase you know the iefhth day is going to fall off.

Unless it's a zero or some small number.

Remember not go over 70 in you 7 days that's including your present work day. And that should pretty much keep you within the hours of legal drive time.