Appendix E.
Maintenance Summary (April - August 2007)

For ISSES Equipment Deployment at Laurel, Kenton, and Simpson Counties (KY)
Item	Location / Date	Reason
1	Simpson Co. April 20, 2007	Vendor personnel moved the cables for the new scale console install. They discovered the DVR was not working. Working with Toshiba technical support, vendor personnel re-installed drivers, which returned it to working order.
2	Laurel Co. May 25, 2007	The USDOT number reader camera was not working. One of the fiber optics converters was defective. Vendor personnel replaced it, which resolved the issue.
3	Kenton Co. July 16, 2007	The thermal imaging camera stopped working, which vendor personnel attributed to a potential lightning strike. The manufacturer repaired the system by replacing a circuit board.
4	Simpson Co. August 2, 2007	The PTZ (pan-tilt-zoom remote video control) on the overview camera stopped working during a severe electrical storm. Vendor personnel returned the system to the manufacturer. The manufacturer repaired the system by replacing a circuit board.
5	Laurel Co. August 30, 2007	The thermal imaging camera stopped working, which vendor personnel attributed to possible lightning. The manufacturer repaired by replacing a circuit board.

Comments
As far as the hardware components, the system has been very reliable. Because of power interruptions, mainly at the London site, vendor personnel have had to re-boot a server or re-cycle power to some devices a few times. Vendor personnel are investigating the need for installing and implementing uninterruptible power supply (UPS) systems at weigh station sites. ISSES software relies on many subsystem hardware/software components working properly in order to continue operating. The resolution of ISSES software issues occupies the majority of vendor technical support personnel time. ISSES software itself may not be the cause of the problem. All network and ISSES systems need to be manually restarted after power interruptions or other system issues. This is sometimes attainable via remote access; however on some occasions requires site visits and unavoidable downtime. Until an integrated plan for the hardware and software is implemented, the ISSES is vulnerable to downtime because of any potential hardware/software-related component issues. It is anticipated that downtime will be avoided once the production version of ISSES is installed.

Adapted from e-mail message from David Hunsucker, Kentucky Transportation Center, to independent evaluator, October 17, 2007.