Tovatt Engineering uses a computer system called MARG(Mileage Accumulation Route Generator) that generates driving cycles. MARG performs data logging as it happens. MARG was invented  Tovatt Engineering. Tovatt Engineering uses on road routes in conjunction with MARG. We have a low speed route for small displacement scooters as well as a high speed route for larger displacement cycles. Both routes are CARB Approved.

Appendix IV to Part 86-Durability Driving Schedules

MARG ‘s route speeds are loaded at the press of a button. Frist determine your motorcycle’s class by its engine displacement in cc’s. Then press the button corresponding to the engine size and the route is generated as MARG runs.

Marge displays throttle percentages, maximum lap set speed, trip odometer is MARG’s decision maker.
MARG will not move to the next set point until the miles required for the current lap distance 3.3 miles has been achieved. Each lap does not have a time limit on it.
MARG keeps track of the total miles and kilometers accumulated.
Driver instructions are given based on the distance driven. A yellow line displays the motorcycles speed the green lines are placed on the graph to keep the driver within two miles per hour of the required speed.
One button starts the cycles running.
Up-shift / Down-shift indicators can be automated for MARG’s automated driver.
Test Files can be accessed by pressing a single button.
The drivers aid button places an overlaid window on the screen for the driver.
The refueled button is used to insert a refueled comment in MARG’s files.
Pause is used to stop the cycles and return to the in the same location
Motorcycles do not accelerate or decelerate at the same speeds so we have added a RG( Rate Generator) function. If your motorcycle can’t keep up with the trace or it needs to go faster you can slow it down or speed it up by entering the rate in MPH/sec.
Test numbers are generated automatically so they are not overwritten.



The schedule consists basically of 11 laps of a 3.7 mile course. The basic vehicle speed for each lap is listed below:

Lap Speed miles per hour

1 ........................................................................... 40

2 ........................................................................... 30

3 ........................................................................... 40

4 ........................................................................... 40

5 ........................................................................... 35

6 ........................................................................... 30

7 ........................................................................... 35

8 ........................................................................... 45

9 ........................................................................... 35

10 ......................................................................... 55

11 ......................................................................... 70

During each of the first nine laps there are 4 stops with 15 second idle. Normal accelerations and decelerations are used. In addition, there are 5 light decelerations each lap from the base speed to 20 m.p.h. followed by light accelerations to the base speed. The 10th lap is run at a constant speed of 55 m.p.h. The 11th lap is begun with a wide open throttle acceleration from stop to 70 m.p.h.A normal deceleration to idle followed by a second wide open throttle acceleration occurs at the midpoint of the lap. (b) Durability Driving Schedule for Motorcycles. The Durability Driving Schedule forClass III Motorcycles may be used for Light- Duty Vehicles and Light-Duty Trucks. The schedule consists basically of 11 laps of a 6.0 km (3.7 mi) course. The basic vehicle speed for each lap is listed below: SPEED (KILOMETERS PER HOUR)

Lap                                      Class I Class II Class III

1 ......................................... 65 ......... 65 ......... 65

2 ......................................... 45 ......... 45 ......... 65

3 ......................................... 65 ......... 65 ......... 55

4 ......................................... 65 ......... 65 ......... 45

5 ......................................... 55 ......... 55 ......... 55

6 ......................................... 45 ......... 45 ......... 55

7 ......................................... 55 ......... 55 ......... 70

8 ......................................... 70 ......... 70 ......... 55

9 ......................................... 55 ......... 55 ......... 46

10 ....................................... 70 ......... 90 ......... 90

11 ....................................... 70 ......... 90 ......... 110

During each of the first nine laps there are 4 stops with 15 second idle. Normal accelerations and decelerations are used. In addition, there are 5 light declerations each lap from the base speed to 30 km/h followed by light accelerations to the base speed. The 10th lap is run at a constant speed. The 11th lap is begun with a wide open throttle acceleration from stop. A normal deceleration to idle followed by a second wide open throttle acceleration occurs at the midpoint of the lap.


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