CVOR – Threshold Values

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What is a carrier’s threshold?

A carrier’s threshold is the safety performance standard (violation rate) that a carrier is expected to not exceed, based on industry performance data. It is measured individually for collisions, convictions and CVSA inspections and combined to determine an overall violation rate. The threshold is expressed in points accumulated in a sliding 24-month period. A carrier’s collision and conviction thresholds depend on its rate of kilometres travelled per month in Canada, whereas the carrier’s inspection threshold depends on the number of units inspected (drivers and vehicles) in the past 24 months.

The overall threshold combines three individual thresholds: collision threshold, conviction threshold and inspection threshold in the ratios of 2:2:1. These individual thresholds are shown on the Carrier CVOR Abstract (Level II)

Development of performance measures in the CVOR System

The Ministry analysed the on-road safety performance of a large sample of carriers operating in Ontario during the two-year period from July 1, 2003 until June 30, 2005. Collision rates and safety related conviction rates for each carrier were plotted and compared for carriers with varying rates of travel, resulting in a standard that identifies acceptable levels of performance. A similar standard was developed for vehicle inspection performance based on frequency of inspection. Performance standards were determined based on monthly kilometric travel.

An overall performance level or threshold was established for each carrier by weighting the collision, conviction and inspection performances in the ratios of 2:2:1. In other words, collisions and convictions are given double the weight of inspections in determining an operator’s overall violation rate (performance level).

Note: For a copy of the threshold value tables, threshold formulas and sample calculations of kilometric rate of travel, violation rates, and percentages of threshold calculations of how you arrive at your violation rate, please contact MTO Carrier Sanctions and Investigation Office

Violation Rates

The CVOR System calculates the carrier’s violation rates for collisions and convictions based on the total number of points accumulated over (up to) a 24-month sliding period compared to the threshold values established for that carrier’s kilometric rate of travel during that same period. For inspections, the total points accumulated in any given period, up to a maximum of 24 months, are compared with the threshold points established based on the number of units (drivers and vehicles) inspected in that same period These individual thresholds are combined to arrive at an overall violation rate with collisions and convictions weighted double to inspections.

As new events and points are recorded, events and points older than 24 months drop off. The formula is based on a 24-month period or the number of months since the start of the carrier’s CVOR record, whichever is less. The violation rate is converted to a percentage of the carrier’s threshold. Appropriate Ministry interventions and sanctions are triggered by the CVOR System if a carrier reaches various levels of its threshold.

Note: For a copy of the threshold value tables, threshold formulas and sample calculations of kilometric rate of travel, violation rates, and percentages of threshold calculations of how you arrive at your violation rate, please contact MTO Carrier Sanctions and Investigation Office

The Registrar may use discretionary power to intervene in cases not triggered by the automated system.

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