Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
144 A p p e n d i x G Litman (1) provides shortcut methods using demand elasticities to forecast changes in travel speeds calculated as elasticities applied to generalized costs (when using fixed demand). A time elasticity range of -0.5 to -0.8 is recommended or -0.03 price elasticity to all generalized costs. Alternatively, he recommends the use of a capacity elasticity of -0.1 to lane miles (applicable only for highways). Elasticities, if representative of the context, may be used as part of a sensitivity analysis for dealing with induced volume. Induced demand can be mostly addressed if the demand model capabilities exist by using network (or matrix)âbased determination of travel times, and value of travel time savings to account for most of the induced and diverted demand when a single mode is impacted (e.g., highway). Reference 1. Litman, T. Generated Traffic and Induced Demand. Victoria Transport Policy Institute, 2015. http://www.vtpi. org/gentraf.pdf. Shortcut for Analysis of Generated Traffic
