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Now that Illinois has legalized recreational marijuana, among the questions that those in opposition have raised include how police will test people for driving while stoned.

Tools are readily available to test drunk drivers, but it's not as easy to assess if someone is too high to drive.

In a statement earlier this month from the Illinois Association of Chiefs of Police, they said, "several legislators, in the floor debate, mentioned their conversations with their chiefs. They know we have no reliable device to test for impairment on our roadways, for example. They know more people will die on our roadways."

Democratic Senator Heather Steans of Chicago, the chief co-sponsor of the legislation, says lawmakers are looking at methods used in other states to test for driving while high.

Governor JB Pritzker says that a marijuana DUI task force has been created to look at the issue.

Meanwhile, about 700,000 records could be wiped clean under the law. More than half are eligible to be automatically expunged or pardoned if the offense involves less than 30 grams. Pritzker and Democratic Rep. Jehan Gordon-Booth of Peoria shared strong feelings this week about marijuana law they feel have hit minority communities especially hard.

Additionally, those busted for larger amounts could petition the courts to vacate their conviction. However, no violent offenders would be eligible.