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About the Speed Charts
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The speed charts are dynamically generated using speed average data from the
Houston TranStar AVI Traffic Monitoring System. Each chart plots lines
representing typical traffic speed averages on a freeway segment between 5 AM
and 8 PM each weekday. The averages are calculated using historical data from
the system and are updated frequently. Another line represents the current
days' speed averages. Gaps in this line indicate a lack of speed data for the
freeway segment being viewed.
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