01702397

Component

https://doi.org/10.1177/0361198119838266

Count expansion methods are a useful tool for creating long-term pedestrian or cyclist volume estimates from short-term counts for safety analysis or planning purposes. Expansion factors can be developed based on the trends from automated counters set up for long periods of time. Evidence has shown that the activity patterns can vary between sites so that there is potential to create more accurate estimates by grouping similar long-term count trends into factor groups. There are two common approaches to developing factor groups in pedestrian and cyclist count expansion studies. The land use classification approach has the advantage of being simple to apply to short-term count locations based on attributes of the surrounding area, but it requires assumptions by the researchers about which characteristics correlate with different activity patterns. Empirical clustering approaches can potentially create more distinct clusters by effectively matching locations with similar patterns, but they do not present an easy way to apply the resulting factor groups to appropriate short-term count sites. This study connects the two approaches and takes advantage of the benefits of both by using objective measures of the surrounding land use to model membership in the empirical cluster groups.

19-03996

English

pp 720-730

2019-5

Transportation Research Record: Journal of the Transportation Research Board

Digital/other

Figures (9) ; Maps; References (18) ; Tables (6)

Activity choices; Bicycle travel; Cluster analysis; Cyclists; Land use; Pedestrian counts; Traffic volume

Data and Information Technology; Pedestrians and Bicyclists; Planning and Forecasting

TRIS, TRB, ATRI

Feb 27 2019 4:42PM