Sam Sanfilippo was caught going 103 mph on Interstate Highway 294 in 2006 — 48 mph over the speed limit — but you wouldn't know it by looking at his driving record.

That's also the case for Marvin McCraney, cited for weaving at 103 mph on Interstate Highway 55 in 2008.

And for Jermaine Johnson, who police said hit 110 mph on I-57 that year — and was drunk.

All got court supervision, a form of probation that kept the traffic tickets off their public driving records, and a Tribune investigation found those cases weren't exceptions.

For triple-digit speeders, they are the norm.

A Tribune analysis of state police tickets, license data and court records shows that since 2006, Chicagoland courts have given supervision to nearly two-thirds of those found guilty of driving 100 mph or faster.

For hundreds of motorists caught driving that fast every year, court supervision helps keep their insurance rates low while stopping officials from using the tickets as a reason to suspend their licenses.

Judges across the area defended supervision as a helpful alternative to conviction, but some were surprised at how often their peers handed it out. Also surprised was the state's keeper of driving records: Secretary of State Jesse White. Citing the Tribune's findings, White now wants to ban supervision for extreme speeders.

Mike Donovan is beyond surprised. He's outraged. Donovan's daughter and grandson were killed in 2005 by a DuPage County speeder with a history of supervisions.

"We see the judicial system basically failing us," said Donovan, who helps run a traffic-safety group called

Court supervision has long been a staple of area courts. Speeders pay a higher fine, often go to traffic school and maybe do community service. They also promise to drive safely during the probation period, usually a few months to a year. After that, the case is dismissed, as if the ticket never happened.

The Tribune analysis found that since 2006, more than 1,100 people cited for going 100 mph or faster by the Illinois State Police in metro Chicago kept all citations from the traffic stops off their records. And that's likely an undercount of triple-digit speeders who get court supervision, because the analysis didn't include cases where data were incomplete, still pending or that involved tickets issued by other departments.

Of the cases of triple-digit speeders with known court outcomes:

--Those who drove 100 mph or faster while drunk got their records cleansed 40 percent of the time, with no conviction even for DUI.

--Others driving recklessly or erratically at those speeds got supervision more than 60 percent of the time.

--For those cited just for speeding that fast, more than 70 percent received supervision.

Beneficiaries included Chalum Sangsuvan, who hit 131 mph in his BMW near the I-294/ I-88 interchange on a Saturday afternoon in 2008. He got supervision, despite getting supervision a year earlier for going 94 mph on I-294. He could not be reached for comment.

Even the fastest drivers benefitted.

Ajay Lodhari and Jaime Villarreal raced along I-94 in Lake County last summer at 150 mph —- the fastest citations in the data.