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SPEED LIMITER * Canada - Hole in the rule needs fix; but week one goes smoothly
There's still a handful of significant enforcement issues that needs to be ironed out by policy makers
Milton,ONT,CAN -Today's Trucking -6 July 2009: -- On the second day of physical speed limiter enforcement in Ontario, there weren't any 'elephant races' among trucks in the right lane on Highway 401, little evidence of increased four-wheeler road rage; and no identifiable uptick in rear-end car-truck collisions... Contrary to some prophecies, the first week that fines were issued to truckers whose vehicles are not governed at 105 km/h was relatively incident free -- although, clearly, there's still a handful of significant enforcement issues that needs to be ironed out by policy makers... For one thing it appears that some truckers may still be able to travel faster than 105 km/h for the time being, even if their maximum engine speed is properly programmed... Here's why: The Ontario Ministry of Transport opted for simple, EZ-Tap read-only devices (at least during the infancy of the rule), which are limited to reading and displaying only a handful of engine parameters, including engine speed, the cruise control setting, and horsepower rating...
However, as the law acknowledges, in order to physically limit a truck's speed at 105 km/h, several other calibrations beyond engine speed must also be set in accordance to specific targets, such as the rolling radius of the tires, transmission and gear ratios, drive axle differential and other parameters the current ecm readers are unable to scan... So, depending on those calibrations -- altered either erroneously, as an attempt to tamper, or innocently as a way to get better fuel economy -- a truck can physically reach road speeds above 105 km/h and the current EZ Tap reader could still determine the truck is technically compliant... (Picture above: The Ez-Tap reader spits out engine speed settings wirelessly in a matter of seconds. But does it do enough to ensure full compliance?) (Picture below: MTO inspector Jason Leeman expects more than a couple court challenges, although the fact that CVOR records aren't affected may keep the lid on appeals)Labels: speed limiters
posted by Unknown @ 4:18 AM
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