If tested in compliance with J2825, a Class 1 (per IEC 61672-1) sound level meter (SLM) is needed. The cheapest class 2 meter I have ever seen is ~$500. Not a big problem if you are buying one meter, but if they are buying a fleet of them, and the associated field calibrators (~$1000+ each) the costs quickly add up. For Class 1 equipment you are looking at $3000+ per SLM plus the field calibrators. Adding in training, yearly traceable calibration ($500+ per system) etc. means this is not a trivial amount of money.
They could pick up the equivalent of radio shack meters or cell phone apps for much much less money, but they would be torn apart in court (and quite rightly so, I have tested many and if you aren't careful, they can report results that are wrong by 10's of decibels with no indication that the measurement is invalid).
Even if they were in for $5000 per system, that is peanuts in the overall Toronto budget, but is this a problem requiring that level of investment?
I'm not sure they need a fleet of them and again....even a cheapie that leads to the bike coming in for a test is a good deterrent.
Ie officer finds bike loud
does quickie check with handheld - again will be obvious
Requires rider to get it tested at XYZ station .....
In addition I think the key is allowing JohnQ public to provide licence plates of loud bikes and a followup procedure to see that the complaint was acted on.
I don't think testing gear is the issue ....I think police compliance is .
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