The first person ever to be charged with drug-impaired driving in Toronto is set to appear in court Thursday.

Police say a Toronto woman was under the influence of drugs while driving after she crashed her vehicle into a collision-scene investigation.

Police officers from 14 Division were investigating a crash near 625 Richmond Street West when they witnessed a motorist drive into a parked car on Wednesday.

After speaking with the motorist, police arrested her under Canada's new impaired driving by drug law.

The new legislation, which came into effect across Canada on July 2, allows police officers to require drivers to submit to a roadside sobriety test.

Previously, police who stopped drivers they suspected of being under the influence of drugs could ask for a fluid sample to determine whether the person is intoxicated - but were required to inform the individual that they aren't obligated to comply with the request.

Under the new law, drivers who are convicted of drug-impaired driving will face a minimum $1,000 fine for a first offence. A second conviction could result in a month in jail.

Littoya Blackman, 27, is charged with impaired driving by drug and is scheduled to appear in court at Old City on Thursday.