Most cities and states have policies that allow them to suspend a driver’s license for nonpayment of fines and fees, most commonly traffic fines.

These policies are so popular that judges have described them as “the most valuable tool available to the municipal courts for inducing payment on past due accounts.”

Studying the effects of these policies can be difficult because there is no uniform national reporting of crime statistics.

Anecdotal evidence suggests that failure to pay fines – not dangerous driving – is the most common reason for driver’s license suspensions in the United States.

And research indicates that these burdens are primarily borne by low-income people and people of color.

As a public affairs scholar who has written extensively about labor markets and criminal justice systems, I’ve conducted research with Joanna Carroll supports these conclusions.

But it also illuminates a previously unknown racial inequality of the policy.

Our research suggests that, by appearing on the driver’s record, license suspensions increase the probability that Black – but not white – drivers incur more traffic tickets. Even after the debt is paid and the license regained, these suspensions continue to harm drivers, and these harms exclusively affect Black drivers.

This shows that suspensions don’t just trap people in a cycle of mounting debt but also a cycle of negative interactions with the criminal justice system.

We studied a sample of over 2,000 drivers who received traffic tickets in Marion County, Indiana, home to Indianapolis, between 2011 and 2016.

In that county, if a driver fails to pay or contest a ticket within 72 days, their license is automatically suspended. This means that judges and other members of the justice system cannot choose who receives a suspension.

Every driver in our sample paid their ticket in the days surrounding the payment deadline.

This is an ideal environment to study the long-term impacts of suspensions because it creates two groups of people that are easily comparable: those who paid the ticket right before the deadline, thus avoiding a suspension, and those who paid after the deadline and received a suspension.

We found that Black drivers who received a failure-to-pay suspension increased their likelihood of getting another ticket by up to nine percentage points. White drivers, meanwhile, saw a roughly three percentage point decrease in their likelihood of getting another ticket.

We attempted to identify differences between white and Black drivers that might explain this result but were unable to do so. For example, Black drivers are not committing more offenses than white drivers, nor are the offenses they commit more serious. Black drivers are just as likely as white drivers to pay their tickets. And Black drivers are more likely than white drivers to reinstate their license after the suspension.

Moreover, regardless of race, following the suspension, drivers with larger fines are less likely to receive another ticket, suggesting that all drivers drive more cautiously after getting a suspension, likely to reduce the probability of receiving another ticket. This is consistent with previous studies on the effects of traffic policies, which show traffic enforcement leads to safer driving.

We believe the most convincing explanation for our findings is that driving “better” to avoid being pulled over is an ineffective strategy for Black drivers, who are more likely to have an encounter with police regardless of how they drive.

This interpretation is consistent with studies showing Black people are more likely to be pulled over without cause. After pulling over a Black driver, the police officer discovers the prior failure-to-pay suspension and becomes more likely to issue a ticket.

This sequence of events does not occur when the driver is white because white drivers are able to minimize the chance of being pulled over by changing their driving behavior.

Our research is the first to study failure-to-pay suspensions in the United States, and it’s the first to demonstrate that they exert disproportionate harm on Black drivers.

This evidence could prove relevant to policymakers in states across the county who are currently debating discontinuing license suspension for nonpayment of legal debts.

Dr. Joanna Carroll co-authored this research while she was at Indiana University. She currently works at the Government Accountability Office.

Sian Mughan, Assistant Professor of Public Affairs, Arizona State University

This article is republished from The Conversation under a Creative Commons license. Read the original article.