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Speed Measuring Devices In Ontario

The officer was driving in the opposite direction to the way I was travelling. How did he know what speed I was going?”

Officers have different ways of measuring the rate of speed that a car is travelling. Two of those ways are:

  1. Radar: This device sends a radio beam and takes a measurement based on the speed of sound. The measurement is accurate, but an officer cannot pinpoint a specific vehicle in a specific location. This device can be handheld or on the dashboard of a cruiser. It can take readings while the officer is driving in the opposite direction. 
  2. Aircraft: There is areas across Ontario that have officers detect speed from an aircraft, such as a helicopter or airplane. In those areas, the officer will use a stopwatch to time how long it takes a vehicle to travel from one predetermined point to another.  If he determines the vehicle is going over the speed limit, he will radio an officer on the highway to pull over the vehicle and issue a ticket.

Let’s go back to the opening question of how the officer knew what speed you were going. In this case, the officer likely used Radar to determine your speed. If you were in an area monitored by Aircraft, your speed may have been registered from a helicopter flying above you.

Regardless of how your speed was measured when you received the ticket, you have the right to question the officer’s evidence against you. That is where we get involved. We offer a free initial review of your case and would be happy to provide you with the information you need to make an informed choice about what to do with your speeding ticket. Call us today to discuss your matter in more detail at 1-844-647-6869 or email us at

If you would like more information about speeding offences, check out these other posts:

Speeding Categories and Penalities

Reduced Speeding Ticket: Should I Fight It?

Highway 401 Speeding Ticket

Posted under Speed Measuring Devices, Traffic Ticket Defence

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