In the Greater Toronto Area (GTA), collision reporting centers are typically operated by local police services. Here are some of the main collision reporting centers:

1.  Durham Regional Police:
   • Location: 605 Rossland Road East, Whitby, Phone 905-668-41572.    
2. Halton Regional Police:
   • HRPS 1 District (12 Division), 490 Childs Drive, Milton, Phone 905-636-3100
   • HRPS 2 District (20 Division), 95 Oak Walk Drive, Oakville, Phone 905-825-4640
   • HRPS 3 District (30 Division), 3800 Constable Henshaw Blvd. Burlington, 905-331-0233
3. Hamilton Police Service
   • Division 20 – East End Station, 2825 King Street, Hamilton, Phone 905-560-0510
   • Division 30 – Mountain Station, 400 Rymal Rd E, Hamilton, 905-385-2426
4. Peel Regional Police
   • 11 Division: 3030 Erin Mills Pkwy Mississauga, Phone 905-820-6536
   • Shoppers World Brampton, 499 Main St. S Unit 189A Brampton, Phone 905-459-8585
   • Peel Regional Police Headquarters, 7150 Mississauga Rd, Mississauga, Phone 905-821-8393
5. Toronto Police Service:
   • East Collision Reporting Centre – 39 Howden Road, Scarborough,  Phone  416-808-4960
   • North Collision Reporting Centre – 113 Toryork Drive, North York, Phone 416-808-39606.   
6. York Regional Police:
   • See York Regional Police website at https://www.yrp.ca/en/online-reporting/report-a-motor-vehicle-collision.asp

These centers provide a place for drivers involved in collisions to report the incident, gather necessary documentation, and receive assistance. It's advisable to check with the specific police service for the most current information, including operating hours and requirements.