Index | Table of contents | Technical Report | Executive Summary | Background | Rear Window Defrogger and Wiper Information | State Crash Data | Analysis Databases | Analysis Method | Hypotheses | Conclusions | Appendix A
PRTCH is the difference between percentage of rear defoggers for the last and first model year for that make-model.
The State Columns show the number of rear impacts that were stopped, changing lanes, and backing in that State.
Shaded cells were excluded from the analysis because reported percentages were much higher or lower than expected relative to previous or subsequent percentages.
- CG and MM2 are codes used in NHTSA evaluations for indicating the basic car group and specific make-model.