File:Speed-flow horseshoe diagram traffic congestion.svg

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Summary

Description
English: Speed-flow diagram or speed-volume diagram: vehicle speed versus vehicles per hour passing through a point on a highway. The horseshoe shape indicates that vehicle throughput collapses when volume is 80%-100% of capacity. The traffic mode changes from free-flowing in the green area, to congested in the gray area. The red area marks rush-hour traffic.

Joe Cortright (April 22, 2020) What Covid-19 teaches us about how to fix freeways[1]

SH1 Northbound at Green Lane – What happens here?[2], Waka Kotahi NZ Transport Agency, 2016
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Captions

A speed-flow diagram showing that traffic congestion is formed when vehicle volume or demand exceeds capacity

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23 August 2023

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current15:47, 23 August 2023Thumbnail for version as of 15:47, 23 August 2023800 × 400 (8 KB)HueSurnameUploaded own work with UploadWizard
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