Signal Testing at Ankle Bracelet Position with Infra

- Red Reflective Windshield

A test was conducted at an independent antenna range to determine the impact on signal strength of cell phone frequency signals at the position of an ankle bracelet typically used in tracking certain criminals. The test compared the signal strength between a car equipped with an Infra

- Red (IR) Reflective windshield and the same car equipped with a standard windshield. A typical ankle bracelet uses cell phone frequencies to determine the location of the criminal so that the Corrections Bureau can track the criminal.

Test Results:

The testing was conducted for signal strength in the driver, front passenger, rear left and rear right passenger locations. The same vehicle was used for both the IR Reflective windshield and the standard wind shield. The results show that there is no statistically significant difference between the car equipped with standard windshield and the IR Reflective windshie ld. The test was conducted with an IR Reflective windshield with no del etions, and with deletion only in t he paint area of the windshield. Deletion in the paint area do not count towards the deletions allowed under the CARB Cool Cars Regulation.

The average signal strength varies a little depending on the location of the ankle bracelet. However, at any location, the difference between the IR Reflective windshield vehicle and the standard windshield vehicle is insignificant. It is also clear that the ankle bracelet signal is not affected by the deletions in the windshield. Pittsburgh Glass Works, LLC 30 Isabella Street Pittsburgh, PA 15212 Telephone (412) 995

- 6482 mrustagi@pgwglass.com www.pgwglass.com

Mukesh Rustagi Director, Strategic Product ManagementDriver Foot Level Signal :

The driver foot level signal comparison shows that there is actually a better signal when the vehicle is equipped with an IR Reflective windshield than with standard windshield.

The average gain of the IR Reflective windshield with deletion in the paint area is actually almost 1 dB better than the standard windshield. The deletion in the paint area is typical of all IR Reflective windshields and is not counted towards the Tts calc ulation according to the regulation. We would consider this difference to be statistically insignificant and within the margin of error.

Front Passenger Foot Level Signal:

The comparison of this position shows no difference between the two windshield types

.Rear Driver Foot Level Signal:

The results from the testing of the signals from the rear driver location shows a difference of 0.8 dB. Once again, this is statistically insignificant and well within the margin of error.

Rear Passenger Foot Level Sig nal:

The test results for the rear passenger seat show a signal difference of 0.4 dB, which is once again statistically insignificant and within the margin of error. Essentially, there is no difference between the two windshields.

Conclusion

The ability to track an individual wearing an ankle bracelet is no different in a vehicle equipped with an IR Reflective windshield than in a vehicle with a standard windshield. There is no scientific basis for any concern about the ankle bracelet issue associated with the Cool Cars regulation.