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Data from the Houston TranStar traffic management system is the source for the Traffic Alerts.
As the traffic operators at Houston TranStar monitor conditions on Houston area freeways and High Occupancy Vehicle (HOV) lanes, they update information about incidents in the TranStar system. This information is monitored by the automated Traffic Alert notification software. As the software detects changes in the incident information, it generates alerts in the form of E-mail, to registered users.
Travel time alerts are generated by using real-time information collected by the Houston TranStar Traffic Monitoring System.
For incidents, the number of alerts you receive will depend on the number of incidents that occur on the roadways for which you register. On average, you can expect to receive 6-10 alerts per freeway between 5 AM and 7 PM. This means that if you register to receive alerts for two freeways between 5 AM and 7 PM each weekday, you can expect to receive as many as 400 alerts a month. See the warning to read about the risks of receiving a large number of alerts.
The number of travel time alerts you receive is configurable in your user profile.