Understanding the 70/8 Rule
For OTR (Over-the-Road) truck drivers in the US, compliance with FMCSA Hours of Service (HOS) regulations is critical. The "70-hour/8-day" rule is the most common limit for carriers operating every day of the week.
🚛 The Limit
You cannot drive after being on duty for 70 hours in any 8 consecutive days.
🔄 The Rolling Window
This is not a fixed week. It's a rolling 8-day period that moves forward every day.
⏱️ The Reset
You can reset your 70-hour clock to zero by taking 34 consecutive hours off duty.
How to Calculate Your Recap
Drivers often ask: "How many hours do I have available tomorrow?"
The calculation is simple but easy to mess up if you are tired. At midnight tonight, the hours you worked on Day 1 of the 8-day period will "fall off". Therefore, the hours you gain back tomorrow are exactly equal to the hours you worked on Day 1.
Formula: 70 - (Hours worked Day 2 through Today) = Hours Available Tomorrow
Truck Driver Trip Sheets
While the log book tracks time, the trip sheet tracks expenses. Use a trip sheet to record:
- State Mileage (crucial for IFTA fuel tax reporting)
- Toll expenses and scale fees
- Fuel gallons purchased and location
- Bill of Lading (BOL) numbers
Frequently Asked Questions
1. Do I still need a paper logbook with ELD?
Yes. Even with an Electronic Logging Device (ELD), the DOT requires you to keep a supply of blank paper logs (RODS graph-grids) in the truck as a backup in case the ELD malfunctions.
2. What counts as "On Duty"?
"On Duty" includes all time from the moment you begin work until you are relieved. This includes driving, loading/unloading, inspecting the truck (PTI), fueling, and waiting for dispatch.
3. Can I use the 60/7 rule instead?
Only if your carrier does not operate vehicles every day of the week. Most OTR carriers operate 7 days a week and are therefore subject to the 70/8 rule, not the 60/7 rule.