WASHINGTON — In a 30-day period ending last month, D.C. cab drivers refused 84 of 308 potential customers in an anonymous rider program.

The Anonymous Rider Program, run by the D.C. Taxicab Commission, is meant to target such violations. It also found 28 credit card readers that didn’t work out of 300 rides.

In a news release, the commission says cab drivers can only refuse services for drunk riders or if the driver feels they are in danger. The fine for refusing a customer is $500 while lacking a credit card payment option is $1,000.

Riders in the program include both men and women as well as those using seeing-eye dogs and wheelchairs.

Credit card acceptance was down from 96 percent to 91 percent.

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