How do I use this calculator?
The basic portion of this calculator allows you to calculate any of the variables shown directly above.
Calculator Operations:
- Enter the number of hours and minutes already worked to calculate the time remaining on the reset clock.
- Enter the number of hours worked and the time remaining to calculate the minutes already worked.
- Enter the number of minutes worked and the time remaining to calculate the hours already worked.
The advanced version of this calculator allows you to calculate the reset end time based on the total hours worked and the reset start time.
Use the calculate button when all known values have been entered and use the reset button when you want to clear the values from the calculator.
Calculate when a 34-hour FMCSA restart for property-carrying drivers ends, find the latest reset start time, or check remaining consecutive off-duty time.
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34-Hour Reset Clock Formula
The following formula is used to calculate the time remaining on a 34-Hour Reset Clock.
Variables:
- TR is the time remaining on the 34-Hour Reset Clock (hours)
- H is the number of hours already worked (hours)
- M is the number of minutes already worked (minutes)
To calculate the time remaining on the 34-Hour Reset Clock, add the number of hours already worked to the number of minutes already worked divided by 60 (to convert minutes to hours). Subtract this sum from 34 (the total hours in the reset period).
What is a 34-Hour Reset Clock?
A 34-hour reset clock is a provision in the hours of service regulations for truck drivers in the United States. It allows drivers to reset their 60 or 70-hour clock, which tracks the maximum amount of time they are allowed to work in a 7 or 8-day period, by taking 34 consecutive hours off-duty. This rule is designed to prevent driver fatigue and improve road safety.
How to Calculate 34-Hour Reset Clock?
The following steps outline how to calculate the time remaining on the 34-Hour Reset Clock.
- First, determine the number of hours already worked (H).
- Next, determine the number of minutes already worked (M).
- Next, gather the formula from above = TR = 34 - (H + M/60).
- Finally, calculate the time remaining on the 34-Hour Reset Clock (TR).
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem:
Use the following variables as an example problem to test your knowledge.
Number of hours already worked (H) = 12
Number of minutes already worked (M) = 30
