To reach us

By secure email

You can communicate with the Commission des transports by secure email to :

  • Change of address or contact information
  • Request for access to information
  • Request for access to digital information
  • Request a subscriber number
  • Request information
  • Send a complaint regarding our services
  • Send a complaint concerning a carrier
  • Other

By mail, phone or fax

200 Chemin Sainte-Foy
7th floor
Québec (Québec) G1R 5V5
Telephone - Montreal area : 514 873-6424
Telephone - All other areas : 1 888 461-2433
Fax : 514 873-4720 or 418 644-8034

In person

Québec City
200 Chemin Sainte-Foy
7th floor
Québec (Québec) G1R 5V5
Plan de Québec
Montréal
545, boul. Crémazie Est
10th floor, bureau 1000
Montréal (Québec) H2M 2V1
Plan de Montréal

Open hours

Monday, Tuesday, Thursday and Friday, from 8:30 a.m. to 12:00 noon and from 1:00 p.m. to 4:30 p.m.
Wednesday, from 9:30 a.m. to 12:00 noon and from 1:00 p.m. to 4:30 p.m.