Incorporating Travel Time Reliability into the Highway Capacity Manual (2014) / Chapter Skim
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169 This appendix discusses freeway demand estimation for the scenario generators. Demand Variability Categorization of demand is done by defining demand patterns in the reliability reporting period (RRP)
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170 Table C.1. Demand Multipliers for I-40 EB Case Study Day of Week Month Monday Tuesday Wednesday Thursday Friday January 0.996623 1.027775 1.040394 1.052601 1.081612 February 0.939253 1.010728 1.039214 1.092029 1.140072 March 1.043305 1.069335 1.063524 1.110921 1.171121 April 1.073578 1.087455 1.098238 1.161974 1.215002 May 1.076331 1.106182 1.113955 1.157717 1.210434 June 1.078043 1.085853 1.067470 1.138720 1.180327 July 1.082580 1.070993 1.102512 1.147279 1.184981 August 1.046045 1.052146 1.060371 1.093243 1.164901 September 1.016023 1.024051 1.023625 1.074782 1.152946 October 1.048981 1.045723 1.066986 1.107044 1.160954 November 0.974044 0.999947 1.041211 1.081541 1.070354 December 0.974785 0.956475 0.987019 0.916107 1.007695 Figure C.1.
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171 Table C.2. Demand Pattern Configuration for I-40 EB Case Study Monday Tuesday Wednesday Thursday Friday January 1 1 1 2 3 February 1 1 1 2 3 March 4 4 4 5 6 April 4 4 4 5 6 May 4 4 4 5 6 June 7 7 7 8 9 July 7 7 7 8 9 August 7 7 7 8 9 September 10 11 11 12 12 October 10 11 11 12 12 November 10 11 11 12 12 December 1 1 1 2 3 Table C.3.
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172 computed based on the AADT estimated for the facility along with hourly and daily demand multipliers. Mainline and ramp AADTs are entered in the Facility-Basics worksheet of FSG.
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173 Table C.5. Demand Multipliers for I-40 EB Detailed Scenario Number 2117 Source: © 2013 Google.
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174 June to August; and September to November) were selected to group similar demand months, as well as months with similar weather conditions.
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