Appendix A - CVOR Formula
CVOR Calculations
How Is an Operator’s Monthly Rate of Travel Calculated?
An operator’s monthly rate of travel in Canada during a specific time period is used to determine the collision- and conviction-points threshold. Operators must report a significant change in their rate of travel. Consequently, a determination of the operator’s collision- or conviction-violation rate may contain multiple-assessment time periods. The following procedure is followed to calculate monthly rate of travel.
1. Operator reports calculate the total number of commercial motor vehicles operated in Ontario under the operator’s CVOR certificate.
- Include power units plated in Ontario that are owned, leased or rented by the operator and any plated in Ontario that are operated under contract with Owner/Operators.
- Include power units plated in the U.S. or Mexico that operate in Ontario.
- Exclude power units operated by the operator that are plated in other Canadian jurisdictions.
- Exclude all trailers.
Bob owns 10 highway tractors, of which eight are plated in Ontario and two are plated in Manitoba. He leases five trucks, all plated in Ontario. He also employs five owner/operators, all with Ontario plates. The total number of commercial motor vehicles that Bob operates under his CVOR certificate is: 8 + 5 + 5 = 18 commercial motor vehicles
2. Calculate the total kilometres traveled per month by the fleet in Canada, by specific time periods that reflect different rates of travel in Canada.
Total kilometres travelled in a specified time period in Canada by the operator’s fleet divided by the number of months in the time period equal the monthly rate of travel in Canada (km/month).
For Example:
Period 1: (2010 07 01 to 2010 12 31) – 6 months
Total kilometres travelled in Ontario by the fleet of 18 vehicles = 516,000 km.
Total kilometres travelled in the rest of Canada by the fleet of 18 vehicles = 324,000 km.
Total kilometres travelled outside Canada by the fleet of 18 vehicles = 216,000 km.
Monthly rate of travel in Canada = (516,000 + 324,000) ÷ 6 = 140,000 km/month.
Period 2: (2010 01 01 to 2011 06 30) – 18 months
Total kilometres travelled in Ontario by the fleet of 18 vehicles = 1,296,000 km.
Total kilometres travelled in the rest of Canada by the fleet of 18 vehicles = 324,000 km.
Total kilometres travelled outside Canada by the fleet of 18 vehicles = 1,944,000 km.
Monthly rate of travel in Canada = (1,296,000 + 324,000) ÷ 18 = 90,000 km/month.
How Are the Collision Violation Rate and Percentage of Threshold Calculated?
Using the data collected from police accident reports, collision demerit points are assigned according to the collision weighting table.
A collision is considered to have "impropriety” if the accident report indicates something other than "normal” under vehicle condition (fields 31and 32), driver action (fields 33 and 34) or driver condition (fields 35 and 36).
For Example:An operator with a rate of travel of 144,000 km/month in period 1 (six months) and 90,000 km/month in period 2 (18 months) had the following four collisions in the past 24-month period (this period does not include the most recent 30 days):
- one involving property damage and no impropriety in period 1 (0 points)
- one involving personal injury and impropriety in period 1 (4 points)
- one involving a fatality and no impropriety in period 2 (0 points)
- one involving property damage and impropriety in period 2 (2 points)
The collision-violation rate would be calculated in the following manner:
Step 1:
Period 1: 0 + 4 = 4 (total collision points in period 1)
Period 2: 0 + 2 = 2 (total collision points in period 2)
Step 2:
Determine the collision-threshold points for each rate of travel, for a 24-month period. Consult the Table of Threshold Values (see Appendix B) to determine the threshold points for a 24-month period for an operator with a travel rate of 140,000 km/month and 90,000 km/month.
Rate 1: At 140,000 km/month, the collision-threshold point value is 20.16 for a 24-month period.
Rate 2: At 90,000 km/month, the collision-threshold point value is 16.20 for a 24-month period.
Step 3:
Prorate the points for a 24-month period by the number of months in each period to determine the threshold value for that period.
Collision-threshold points in period 1 = 20.16 x (6 ÷ 24) = 5.04 points.
Collision-threshold points in period 2 = 16.20 x (18 ÷ 24) = 12.15 points.
Step 4:
To calculate the percentage of threshold for each period, divide the points assigned in the period by the collision threshold points (x 100%).
Period 1: Percentage of threshold = 100% x (4 ÷ 5.04) = 79.37%.
Period 2: Percentage of threshold = 100% x (2 ÷ 12.15) = 16.46%.
Step 5:
To calculate the overall collision-violation rate for the 24-month period, prorate it in proportion to the time in each period.
| Overall collision-violation rate (24-month period) |
= (79.37% x 6) + (16.46% x 18) ÷ 24 = (476.22% + 296.28%) ÷ 24 = 32.19% |
How Are the Conviction - Violation Rate and Percentage of Threshold Calculated?
The CVOR system assigns points to safety-related convictions as indicated in the Conviction Code Table
To have a copy of the Conviction Code Table sent to you, contact:
Carrier Sanctions and Investigation Office
301 St. Paul Street, 3rd Floor
St. Catharines, ON L2R 7R4
1-800-387-7736 or (416) 246-7166)
For Example:
The same operator described previously with monthly travel rates of 140,000 km/month (period 1) and 90,000 km/month (period 2) also had the following four convictions in the past 24-month period (this period does not include the most recent 30 days):
- Failure to make daily log in period 1 (3 points)
- Overweight – dual axle over 2,000 kilograms in period 2 (3 points)
- Drive motor vehicle – failure to display plates in period 2 (0 points)
- Fail to inspect/repair/maintain according to standard in period 2 (2 points)
The conviction-violation rate would be calculated in the following manner:
Step 1
Calculate the total conviction points in each period.Period 1: 3 (total conviction points in period 1)
Period 2: 3 + 0 + 2 = 5 (total conviction points in period 2)
Step 2
Determine the allowable conviction-threshold points for each rate of travel, for a 24- month period. Consult the Table of Threshold Values (see Appendix B) to determine the threshold points for a 24-month period for a operator with a travel rate of 140,000 km/month and 90,000 km/month.
Rate 1: At 140,000 km/month, the allowable conviction-threshold points value is 46.34 for a 24-month period.
Rate 2: At 90,000 km/month, the allowable-conviction threshold points value is 37.07 for a 24-month period.
Step 3
Prorate the allowable points for a 24-month period by the number of months in each period.
Allowable points in period 1 = 46.34 x (6 ÷ 24) = 11.59 points.
Allowable points in period 2 = 37.07 x (18 ÷ 24) = 27.80 points.
Step 4
To calculate the percentage of threshold for each period, divide the points assigned in the period by the allowable points.
Period 1: Percentage of threshold = 100% x (3 ÷ 11.59) = 25.88%.
Period 2: Percentage of threshold = 100% x (5 ÷ 27.80) = 17.99%.
Step 5
To calculate the overall conviction-violation rate for the 24-month period, prorate it in proportion to the time in each period.
| Overall conviction-violation rate (24-month period) | = (25.88% x 6) + (17.99% x 18) ÷ 24 = (155.28% + 323.82%) ÷ 24 = 19.96% |
How Are the "Number of Units Inspected" for a CVSA Inspection Calculated?
The inspection-points threshold value varies with the number of units inspected, as opposed to varying with the rate of kilometric travel, which is used to calculate the collision- and conviction-threshold values. The number of units inspected is the sum of all the vehicles and drivers inspected in all inspections within the analysis period.
For Example:
Level 3 inspection, with no vehicle defects indicated, straight truck, trailer converter dolly and semi-trailer (1 driver inspected)
Level 5 inspection, tractor and semi-trailer (2 vehicles inspected)
How are the Inspection Violation Rate and Percentage of Threshold calculated?
The CVOR system assigns points to CVSA out-of-service inspection categories, as defined by CCMTA. One point is assigned for each category that is out-of-service per unit. If a vehicle (or driver) has multiple categories out of service, these additional categories are assigned two points each. There are a total of 15 vehicle and two driver categories.
Driver out-of-service points are weighted at 68.75 percent of vehicle out-of-service points, based on the "Predictive Analysis” study that indicated a higher probability of future collisions related to vehicle defects than to driver defects. The violation rate is the total (weighted) points assigned for all inspections, divided by the inspection-points threshold value, and is expressed as a percentage of threshold.
For Example:
Assume the same operator described previously has been inspected three times in the 24-month analysis period. There is no need to break the time into the two periods related to different travel rates, since the inspection-threshold formula only varies with the number of units inspected. (Note: The 24-month period does not include the most recent 30 days.) For ease of understanding, the inspections shown below describe "category defects” as they will appear on a CVOR carrier abstract.
Inspection 1: Level 1
| Unit inspected | Defect - *indicates "out-of-service” | Dr pts. | Veh pts. |
| Driver | *Category – Drivers Licences:Drivers Licences – Improper Licence | 1 | |
| *Category – Hours of Work :Cycle – drive after 70 hours in 7days* | 2 | ||
| Truck Tractor | *Category – Tires:Tires – Tread Depth*:Tires – Ply Separation | 1 | |
| Trailer | *Category – Brakes – Adjustment:Brakes - Adjustment | 1 | |
| 3 units inspected | Total points assigned | 3 | 2 |
Inspection 2: Level 3
| Unit inspected | Defect - *indicates "out-of-service” | Dr pts. | Veh pts. |
| Driver | *Category – Drivers Licences:Fail to produce | 1 | |
| *Category – Seat Belt:Fail to wear | 0 (not OOS) | ||
| Truck Tractor | (Not applicable) | 0 | |
| Trailer | (Not applicable) | 0 | |
| 3 units inspected | Total points assigned | 1 | 0 |
Inspection 3: Level 5
| Unit inspected | Defect - *indicates "out-of-service” | Dr pts. | Veh pts. |
| Driver | (Not applicable) | 0 | |
| Truck Tractor | *Category – Suspension System:Coil spring broken* | 1 | |
| Trailer | (No defects recorded) | 0 | |
| 3 units inspected | Total points assigned | 0 | 1 |
Calculations
Step 1
Calculate the total units inspected for the three inspections.
Inspection 1, Level 1 = 3 units inspected. (1 driver and 2 vehicles)
Inspection 2, Level 3 = 1 unit inspected. (1 driver)
Inspection 1, Level 5 = 2 units inspected. (1 driver and 1 vehicle)
Total units inspected = 6
Step 2
Determine the inspection-threshold value from the table in Appendix B. For six units inspected, the allowable inspection threshold points = 8.62.
Step 3:
Determine the operator’s total inspection points, where driver points are weighted at
68.75 percent of vehicle points.
| Total inspection points | = 1 x vehicle points + 0.6875 x driver points. = 1 x (2 + 0 + 1) + 0.6875 x (3 + 1 + 0) = 3 + 2.75 = 5.75 inspection points. |
Step 4:
Determine the operator’s inspection-violation rate, expressed as a percentage of threshold.
| Inspection-violation rate | = 100% x (5.75 ÷ 8.62) = 66.71% |
How Does the CVOR System Calculate an Operator's Overall Performance?
The operator’s overall performance is determined by combining its collision-, conviction- and inspection-performance values in the proportions of 2 to 2 to 1. The overall performance measure formula is:
Overall Performance: Po = (2 X Pcol + 2 X Pcon + Pins) ÷ 5
| Where: |
Po = Overall Performance Pcol = Collision Performance Pcon = Conviction Performance Pins = Inspection Performance |
When an operator’s overall violation rate exceeds 1 (100 percent), it is said to be "over threshold” and may be subject to sanctioning by the Deputy Registrar of Motor Vehicles.
Remember that the overall-percent- of- threshold calculation weights collisions and convictions at double the severity of inspections (2:2:1 ratio).
Step 1
Multiply both the percent-of- collision threshold (32.19) and the percent-of-conviction threshold (19.96) by 2, and add the percent-of-inspection threshold (65.64).
2 x 32.19% + 2 x 19.96% + 66.71% = 171.01%
Step 2
Divide the value in Step 1 (171.01 percent) by five to derive the percent-of-overall threshold.
| Percent of Overall Threshold | = 171.01% ÷ 5 = 34.20% |
This value represents the operator’s overall violation rate as a percentage of its overall threshold.
