Re: Tire marks on road

["John S. Denker" <jsd@MONMOUTH.COM>]

"Fakhruddin, Hasanbhai" wrote:
> A tire mark on a road due to hard braking is dark at one end and fades
> out at the other.  Which way was the vehicle moving when the brakes were
> slammed?
>
> This morning I wondered when I saw such marks.

http://www.google.com/search?q=tire+skid-marks+lighter+darker

Or you could just read this month's Car and Driver.
See handy table at end of article.

http://www.caranddriver.com/xp/Caranddriver/features/2002/october/200210_feature_skidroad.xml

This posting is the position of the writer, not that of SUNY-BSC, NAU or the AAPT.