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Identify Vehicle Usage Mission Constraints for Reducing Greenhouse Gas Emissions

October 7, 2013 - 11:46am

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Step 2

As Federal agencies work to identify opportunities for right-sizing the fleet and replacing inefficient vehicles with new, efficient, and/or alternatively fueled models to reduce greenhouse gas (GHG) emissions, they should flag potential mission constraints associated with vehicle usage.

This may involve further data collection to understand the mission considerations associated with individual vehicles. For instance, in Figure 1, Vehicle 004 appears to be underutilized, having both a low user-to-vehicle ratio and a relatively low time in use per day. However, this vehicle is an emergency response vehicle, so limited options are available for sharing, downsizing, or eliminating this vehicle.

Figure 1 – An image of a vertical, combination bar and plot chart titled 'Vehicle Utilization.' The frequency data axis for the bar chart is labeled 'Hours per Day in Use' with a scale of 0-9 hours. The data axis for the plot chart is labeled 'User-to-Vehicle Ratio' with a ratio scale of 0-14. The horizontal axis is labeled 'Vehicle Number.' For '001-Spare,' the bar shows 2 hours per day in use, and the plot shows a user-to-vehicle ratio of 12. For '002-Finance,' the bar shows 3 hours per day in use, and the plot shows a user-to-vehicle ratio of 10. For '003-HR,' the bar shows 3 hours per day in use, and the plot shows a user-to-vehicle ratio of 11. For '004-E/ER,' the bar shows 3 hours per day in use, and the plot shows a user-to-vehicle ratio of 4. For '005-Admin,' the bar shows 3 hours per day in use, and the plot shows a user-to-vehicle ratio of 9. For '006-Site Ops,' the bar shows 4 hours per day in use, and the plot shows a user-to-vehicle ratio of 12. For '007-Public Relations,' the bar shows 5 hours per day in use, and the plot shows a user-to-vehicle ratio of 4. For '008-Emp Shuttle,' the bar shows 6 hours per day in use, and the plot shows a user-to-vehicle ratio of 12. For '009-Site Ops,' the bar shows 6 hours per day in use, and the plot shows a user-to-vehicle ratio of 6. For '010-Security,' the bar shows 8 hours per day in use, and the plot shows a user-to-vehicle ratio of 1.On the chart, there's also a horizontal line labeled 'Agency goal for hours/day utilization' that's just above 3 hours.
Figure 1. Vehicle utilization data for Agency ABC

 

Next Step

This is the final step for analyzing data to evaluate an emissions profile. After evaluating an emissions profile, the next step in the GHG mitigation planning for vehicles and mobile equipment process is to evaluate GHG reduction strategies.

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