# IsolineTrafficOptions
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Controls how real-time and historical traffic data is used when calculating reachable areas. This affects both the size and shape of isolines by accounting for expected travel speeds based on congestion patterns.

## Contents
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 ** FlowEventThresholdOverride **   <a name="location-Type-IsolineTrafficOptions-FlowEventThresholdOverride"></a>
The duration in seconds that real-time congestion data is considered valid before reverting to historical traffic patterns. This helps balance between using current conditions and more predictable historical data when calculating travel times.  
 **Unit**: `seconds`   
Type: Long  
Valid Range: Minimum value of 0. Maximum value of 4294967295.  
Required: No

 ** Usage **   <a name="location-Type-IsolineTrafficOptions-Usage"></a>
Controls whether traffic data is used in calculations. `UseTrafficData` considers both real-time congestion and historical patterns, while `IgnoreTrafficData` calculates routes based solely on road types and speed limits. Using traffic data provides more accurate real-world estimates but may produce different results at different times of day.  
Default value: `UseTrafficData`   
Type: String  
Valid Values: `IgnoreTrafficData | UseTrafficData`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/geo-routes-2020-11-19/IsolineTrafficOptions) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/geo-routes-2020-11-19/IsolineTrafficOptions) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/geo-routes-2020-11-19/IsolineTrafficOptions)