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Traffic Control Signal Service Request  

To let us know about problems with traffic signals, please contact  at:
Telephone # : (613) 933-8764
Email address :

Black & McDonald Ltd. is responsible for the maintenance of all traffic control signal equipment within the City of Cornwall. As such, any service calls concerning knocked down traffic signal poles, burned out signals, signal timing problems, turned mast arms/signal heads, damaged or malfunctioning traffic signal equipment, underground traffic signal cable locates at traffic control signal intersections, flasher systems, etc. should be directed to this maintenance Contractor.