HID headlamp bulbs do not run on low-voltage DC current, so they require a ballast with either an internal or external ignitor. The ignitor is integrated into the bulb in D1 and D3 systems, and is either a separate unit or part of the ballast in D2 and D4 systems. The ballast controls the current to the bulb.
In the larger Montreal Census Metropolitan Area, 67.9% of the population speaks French at home, compared to 16.5% who speak English. Montreal is one of the most bilingual cities in Quebec and Canada with 56% of the population able to speak both English and French. Montreal is the second largest primarily French-speaking city in the world, after Paris. Montreal was named a UNESCO City of Design.
Eastern Standard Time - is abbreviated as EST. Eastern Daylight Time- is abbreviated as EDT. Montreal, Quebec is GMT/UTC - 5h during Standard Time. Montreal, Quebec is GMT/UTC - 4h during Daylight Saving Time.