National Academies Press: OpenBook

Optimal Replacement Cycles of Highway Operations Equipment (2018)

Chapter:Chapter 1 - Introduction

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Page 87
Suggested Citation:"Chapter 1 - Introduction." National Academies of Sciences, Engineering, and Medicine. 2018. Optimal Replacement Cycles of Highway Operations Equipment. Washington, DC: The National Academies Press. doi: 10.17226/25036.

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87 1.1 Background The National Cooperative Highway Research Program Proj- ect 13-04 has developed a guide for optimal replacement cycles of highway operations equipment and an Excel-based replace- ment optimization analysis tool to support equipment replace- ment processes. The guide describes the equipment replacement processes, replacement factors, and LCCA methods. This user manual describes how to use the Excel-based tool. 1.2 About This User Manual The user manual is a companion document to the analysis tool. It is best to review the guide first to understand how the optimization tool supports the equipment replacement processes. The user manual provides instructions for • Installing the optimization tool; • Customizing the tool to meet an agency’s needs; Introduction C H A P T E R 1 • Importing equipment data from the agency’s equipment information systems; and • Using the tool’s six main functions to analyze equipment life cycle cost and support equipment replacement. 1.3 Overview of the Optimization Analysis Tool The tool has the following six functions: 1. Determining optimal life cycles for each equipment class; 2. Performing LCCA on individual equipment units; 3. Identifying candidate replacement units based on utilization or life cycle cost; 4. Prioritizing equipment replacement units; 5. Developing a 5-year replacement needs budget; and 6. Analyzing the cost consequences of various replacement cycles.

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TRB's National Cooperative Highway Research Program (NCHRP) Research Report 879: Optimal Replacement Cycles of Highway Operations Equipment acts as a handbook on equipment replacement concepts and an instruction manual for making cost-effective replacement decisions. The research report presents a process for determining replacement needs for highway operations equipment, identifying candidate equipment units for replacement, and preparing an annual equipment replacement program. The products include a guidance document and an Excel-based replacement optimization tool to support the equipment replacement process and facilitate its implementation.

Disclaimer - This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences, Engineering, and Medicine or the Transportation Research Board (collectively "TRB") be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

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