Starting Sunday, Oregon’s ill-fated experiment with drug decriminalization ends.

The closely scrutinized first-in-the-nation law put minor drug possession on par with a traffic ticket and now enters its final stretch.

The law, approved by voters in 2020, set out to both decriminalize low-level drug possession and infuse the state’s treatment system with hundreds of millions of dollars from cannabis tax revenue.

People with Measure 110 citations have had the option to pay a $100 fine through the court system — or call a helpline for a substance abuse screening in exchange for waiving their citation.

Few people did either, the data shows.

The near-final tally of data related to Measure 110 tells the story of a law that was selectively enforced and, when it came to citations, proved limited in its effectiveness.

Over time, the public lost confidence in the law. A glacial rollout did little to bulk up anemic treatment options and the emergence of a ruthlessly lethal synthetic opioid — fentanyl — led to spiraling overdose deaths and pockets of blight from public drug use.

Here’s circuit court data collected by the Oregon Judicial Department since Measure 110 went into effect on Feb. 1, 2021, through Monday:

Oregon circuit courts imposed $899,413 in fines for people who were cited and convicted.

Of that, the state collected only $78,143.

The conviction rate is high — 89% — but that’s mostly because people failed to show up in court.

Statewide, officers cited 7,227 people under Measure 110.

To avoid a conviction, people need to complete a substance abuse screening that could lead to referrals for services, including treatment. Only 85 people completed the screening.

The drug that drew the most citations: Methamphetamine (54%).

Fentanyl and other so-called Schedule II drugs came in second (31%). The federal government classifies controlled substances into schedules; generally, Schedule II drugs have a high potential for abuse.

Statewide, police cited people at much lower rates for heroin (7%), oxycodone (3%) and cocaine (1%).

In Multnomah County, 1,917 people received Measure 110 citations. Of those 93% were convicted. In nearly every case, the conviction stemmed from a failure to show up in court.

Just 16 people completed the substance abuse screening in Multnomah County.

The Medford Police Department issued the most citations at 2,036. Of those 1,260 were linked to methamphetamine possession.

Oregon State Police came in second with 1,756 overall citations: 823 were linked to methamphetamine possession. Fentanyl and other Schedule II drugs led to 744 citations.

The Grants Pass Police Department ranked third in giving the most tickets with 1,642. Like Medford and state police, the southern Oregon agency identified methamphetamine as the most common reason for issuing a citation.

The Portland Police Bureau ranked fourth. The agency issued 1,332 citations. Of those 769 were linked to fentanyl and other Schedule II drugs and 247 were due to methamphetamine.

About a dozen largely rural police agencies issued a single citation: Willamina, Tillamook, Molalla, Sandy, Silverton, Sublimity, the Warm Springs tribal police and sheriff’s offices in Wasco, Baker, Gilliam, Hood River and Yamhill Counties.

Also issuing just one Measure 110 citation: Gresham police.

The citation numbers for Multnomah County fluctuated over time.

Data shows police agencies issued fewer than 100 citations a quarter until spring 2023 when the number jumped to 435. In the first three months of this year, police issued 507, though the number dropped off after the Legislature rolled back decriminalization.

House Bill 4002 kicks in Sunday, making possession of drugs like fentanyl and methaphetamine a misdemeanor crime.

People caught with street drugs face the prospect of citation or arrest, or depending on where they live in Oregon, the possibility of opting for an alternative to the criminal justice system that emphasizes treatment.