# Chapter 5.5.3 - Traffic Study Override

Source: https://developer.avalara.com/products/communications/integration-guides/dev-guide_rest_v2/reference/customization-traffic-study-override/

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### Traffic Study Override

The `TrafficStudyOverride` object allows the user to specify **traffic study overrides**:

Key

Value

`TrafficStudyType`

`[int]` Traffic Study Type  

Defines to which transaction type the traffic study override applies. For more information about traffic study overrides, see [Safe Harbor Override](/communications/dev-guide_rest_v2/customizing-transactions/sample-transactions/safe-harbor-override/)

-   `1`: Cellular
-   `2`: VoIP
-   `4`: Paging

`SafeHarborFedPcnt`

`[double]` Safe Harbor Federal Percent  

Safe Harbor percent to be overwritten. For more information about traffic study overrides, see [Safe Harbor Override](/communications/dev-guide_rest_v2/customizing-transactions/sample-transactions/safe-harbor-override/)  

`TrafficStudyFedPcnt`

`[double]` Traffic Study Federal Percent  

Client-provided Federal traffic study percent to be used instead of the Safe Harbor percent. For more information about traffic study overrides, see [Safe Harbor Override](/communications/dev-guide_rest_v2/customizing-transactions/sample-transactions/safe-harbor-override/)  

### Example

```json
"TrafficStudyOverrides": [ { "TrafficStudyType": 2, "TrafficStudyFedPcnt": 0.250 }]
```

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