Guidebook on Pedestrian and Bicycle Volume Data Collection (2014) / Chapter Skim
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1 C H A P T E R 1 1.1 About This Guidebook This Guidebook on Pedestrian and Bicycle Volume Data Collection is a resource for practitioners who are, or would like to be, involved in collecting non-motorized count data. The guidebook describes methods and technologies for counting pedestrians and bicyclists, with a focus on automated technologies.
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2 Guidebook on Pedestrian and Bicycle Volume Data Collection • Identify and recommend data collection methods that will meet their project needs, while considering the organization's available resources; and • Correct raw count data to account for systematic over- or undercounting resulting from the use of a particular counting technology. 1.1.2 Guidebook Organization This guidebook contains five main chapters.
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Introduction 3 Screenline counts are counts of the number of pedestrians or bicyclists crossing an imaginary line. Intersection counts include counts of pedestrians crossing each roadway leg or counts of bicyclists turning left, turning right, or going straight.
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4 Guidebook on Pedestrian and Bicycle Volume Data Collection Radio Frequency ID (RFID) Tags RFID tags are commonly used in the logistics industry for tracking individual packages and containers.
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Introduction 5 Report 770) with guidance on estimating pedestrian and bicycle trip generation associated with particular types of trips and demand to use particular pedestrian and bicycle facilities (Kuzmyak et al.
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6 Guidebook on Pedestrian and Bicycle Volume Data Collection varying only 5% from the lowest to the highest volume day, the bicycle volumes show 200% variability in the p.m. peak hour.
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Introduction 7 volume by the proportion of daily traffic occurring on average during the count period (based on previous 24-hour or longer counts) , and the result could then be adjusted for monthly variations in traffic, as determined from data from a permanent counting station, to reach an estimate of average annual daily traffic (AADT)
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8 Guidebook on Pedestrian and Bicycle Volume Data Collection • Fiberoptic pressure sensors, which detect changes in the amount of light transmitted through buried fiberoptic cable based on the amount of pressure (weight) applied to the cable; • Inductive loops, where the magnetic field produced by an electrical current running through buried metal loops is changed when the metal parts of a bicycle pass over the loops; • Magnetometers, which detect changes in the Earth's magnetic field when the metal parts of a bicycle pass over the detector; • Pressure and acoustic sensors, which are placed under a pathway and detect the weight (pressure)
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Introduction 9 Data Management Some counting products come with their own data management software; others require end users to manage the count data themselves (e.g., by storing it in a spreadsheet)
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