Enter the number of hours and minutes already worked into the calculator to determine the time remaining on the 34-Hour Reset Clock. This calculator can also evaluate any of the variables given the others are known.

## 34-Hour Reset Clock Formula

The following formula is used to calculate the time remaining on a 34-Hour Reset Clock.

TR = 34 - (H + M/60)

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