6 FUTURE YEAR FORECASTING
6 FUTURE YEAR FORECASTING
6.1 Purpose
Design Hour Volumes (DHV) are used for ODOT planning and project level analyses. These are based on the existing year volumes developed in Chapter 5. The DHV is generally defined as the future year 30th highest hour (30 HV). Depending on scope and complexity of the analysis, different future methodologies are needed from simple historical trends to complex travel demand models. This chapter will outline the procedures for developing DHV and future Average Daily Traffic (ADT) used for ODOT planning and project level analysis. In addition, the processes for developing pavement design traffic volumes are also discussed. Future design hour volumes are a key input in following analysis steps and methodologies explored in later chapters. For more details on many of the methods in this chapter also refer to NCHRP Report 765.
6.2 General Considerations
The DHV typically controls the design of the project or represents a planning horizon year such as in a Transportation System Plan (TSP). These volumes can either be for nobuild or build conditions.
6.2.1 Rounding
The DHV's need to be rounded before the network is balanced. The traffic volumes are not that precise to go down to one vehicle, especially considering projections that may be out 20 plus years. Balancing the network is easier if the network is not down to the individual vehicle. Future years five or ten years out should be rounded to the nearest five vehicles. Twenty-year future volumes can either be rounded to the nearest five or ten vehicles. Volumes less than five vehicles should use the " ................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- 6 future year forecasting
- handout on growth rates discrete time analysis
- how to estimate the long term growth rate in the
- oxide growth model iowa state university
- aashto traffic growth factors utoledo engineering
- 7 plotting of the growth curve and calculation of growth rate
- progress monitoring calculating rate of growth est time
- tree growth rate table absolute area increase annual
- forest stocking and yield tables usda
Related searches
- year 6 reading comprehension
- year 6 comprehension test
- year 6 reading comprehension worksheets
- year 6 comprehension pdf
- 6 year personal loans
- year 6 sats papers
- reading comprehension year 6 exam
- ks2 year 6 sats papers
- year 6 sats papers 2016
- 6 year car loan rates
- year 6 sats past papers
- year 6 maths sats papers