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Split Sleeper Berth Calculator

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In the world of commercial driving, managing hours is not just about scheduling; it's a regulatory requirement. The Split Sleeper Berth Calculator emerges as a vital tool for drivers and fleet managers alike, offering a simplified way to calculate remaining drive time in compliance with Hours of Service (HOS) regulations. This tool allows for more flexible scheduling by splitting the required 10-hour off-duty time into two segments.

Purpose and Functionality

The primary purpose of the Split Sleeper Berth Calculator is to help drivers utilize the split sleeper berth provision without violating HOS regulations. This provision permits drivers to divide their mandatory 10-hour off-duty period into two parts. However, there are specific conditions: one part must be at least 7 consecutive hours in the sleeper berth, and the other at least 2 hours long, with the total off-duty time still equalling 10 hours.

The calculator uses the following formula for its calculations:

  • Total Off-Duty Time = Sleeper Berth Split 1 + Sleeper Berth Split 2
  • Remaining Drive Time = Maximum Drive Time - Driving Time Before Break


  • Sleeper Berth Split 1 and Sleeper Berth Split 2 are the durations of the two off-duty periods in the sleeper berth.
  • Maximum Drive Time typically stands at 11 hours as per current HOS regulations.
  • Driving Time Before Break refers to the driving time before taking the first off-duty period.

Step-by-Step Example

Let's illustrate the formula with a simple example:

  1. Sleeper Berth Split 1: 8 hours
  2. Sleeper Berth Split 2: 2 hours
  3. Driving Time Before Break: 6 hours


  • Total Off-Duty Time: 8 hours + 2 hours = 10 hours
  • Remaining Drive Time: 11 hours - 6 hours = 5 hours

This example clearly demonstrates how a driver can plan their rest periods and driving time efficiently to maximize their on-duty hours while staying compliant with HOS regulations.

Relevant Information Table

Sleeper Berth Split 1Duration of the first sleeper berth period in hours.8 hours
Sleeper Berth Split 2Duration of the second sleeper berth period in hours.2 hours
Driving Time Before BreakTotal driving time before the first off-duty period.6 hours
Total Off-Duty TimeSum of Sleeper Berth Splits.10 hours
Remaining Drive TimeCalculated remaining drive time in hours.5 hours


The Split Sleeper Berth Calculator is an indispensable tool for commercial drivers aiming to maximize their efficiency under the constraints of HOS regulations. By allowing drivers to split their off-duty time, it offers flexibility in planning rest periods, ultimately leading to safer driving practices and better compliance with regulations. Whether you're a long-haul trucker or manage a fleet, integrating this calculator into your scheduling practices can significantly benefit operational efficiency and regulatory compliance.

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