Specifications
Feature Summary
- 3 Axis digital accelerometer and microprocessor technology
- Digital filter prevents false triggering
- Simple to Use
- Two modes of operation
- 2 Flashes per second during aggressive braking
- 5 Flashes per second during emergency braking
How it works
Deceleration by any method greater than 16 f/s2 and less than 23 f/s2 is defined as Aggressive braking. Both signal lights will flash at 2 Hz.
Deceleration by any method greater than 23 f/s2 is defined as Emergency braking. Both signal lights will flash at 5Hz. How did we decide on the threshold? We chose the same values as most major Antilock Braking Systems (ABS) engage in dry conditions.
Electrical Specifications
- 9-16 VDC Input
- 200 mW power consumption
Fit
Designed for most standard sized motorcycle license plates with the following mechanical dimensions:
- Width: 7.00”
- Height: 4.00”
- Hole Horizontal center to center: 5.75”
- Hole Vertical center to center: 2.7”
Residents of the following states should check sizing before ordering the part:
Alaska, New Mexico, Minnesota
Dimensions
The Technology
Much research was done by the NHTSA and their European counterparts to improve existing brake lights. While certain improvement recommendations were found, there is usually a delay from academic discovery to government regulations and implementation. Volo Lights is based on published research finding people associate increased flash frequency with increased level of urgency.
Many modern vehicles in Europe have Emergency Stop Signal installed. The technology only activates when the automobile is moving faster than 31 mph and the ABS is engaged. In dry conditions, ABS comes ON at about 16 mph. This is an improvement to note, but NHTSA data shows that many rear end accidents happens at deceleration rate that is lower than 31 mph. While speeds less than 31 mph might seem relatively slow, bear in mind it can cause serious injuries to a motorcyclist.
We implemented a design that uses a 3 axis digital accelerometer. During calibration, the user passes a magnet near the bottom lens of the product when the bike is upright on a flat surface. This gives Volo Lights its orientation.
Volo Lights’ microprocessor reads the value a few hundred times a second, while a proprietary algorithm constantly filters and monitors for deceleration that exceeds the trigger points. The algorithm also compensates for very steep hill descent.
When the deceleration reaches the aggressive braking trigger point (16 f/s2), the light flashes at 2 Hz. This is intended alert the driver to possible imminent braking or emergency braking. Earlier signaling encourages additional distance between the rider and the following car. Volo Lights illuminate for two seconds and automatically turn OFF once acceleration is detected.
Once deceleration reaches the emergency braking trigger point (23 f/s2), Volo Lights flash at 5Hz. Research shows 5Hz is the optimum frequency to catch inattentive eyes. The increased level of flash frequency alerts the driver that the motorcyclist is slowing abruptly and therefore should adjust speed accordingly to avoid a potential rear end collision.