Referral Codes: Measuring the Effectiveness of Ad Placements
![](https://www.tenstreet.com/wp-content/uploads/2021/08/ReferralCodes-1024x553.png)
What is a Referral Code? Referral codes are a unique string of letters and numbers used to identify the source of a driver’s application. Why should I use Referral Codes? Xpress will track your applicants using the referral codes you create. These codes help you to evaluate how well a specific ad or vendor (ad agency, […]