For system development, the "Problem Statement" is; "Black ice cannot be seen on roads, causing safety hazards for drivers." Next, the "Need Statement" is; "We need a way to determine when favorable weather conditions exist to form black ice on roads". Last, the "Requirement Statement" consists of the following: the system must be cheep, reliable, and linear, with a low thermal mass allowing a quick response to variation in air temperature.

There is a system already in use that is cheep. This system uses a liquid crystal strip attached to the drivers wing mirror. However, this attachment location is too high from the ground to properly determine road conditions. Additionally, some cars have heated mirrors, which would render this system useless.

A silicone semiconductor junction, in the shape of a diode wa

 Uses a remote temperature sensor mounted close to the road surface

 * 0C = alternating green & red light

 Three modes indicating variations of external temperature

Some common words found in the essay are:
D1 IC1b, Frost Box, Diode LED, Requirement Statement, Calibrate VR1, LED Box, Statement Optional, Statement Black, Research Report, frost box, black ice, vehicle frost, vehicle frost box, Dellow Steve,  *,  * 4c, requirement statement, controls red/green, sensor diode, box installation, ice seen, * 4c =, black ice seen, controls red/green led, light ,
Approximate Word count = 965
Approximate Pages = 4 (250 words per page double spaced)