The distribution of glass fragments on the ground in front of and to the sides of a car was examined when a windscreen is crazed or shattered from the outside of the vehicle. The number of fragments in the vehicle was also examined. Both toughened and laminated screens were used. The number of fragments in front of the window decreased with increasing distance. Very few fragments were found to the sides of the car. An average of over 1400 fragments in the range 0.25-1.0mm was found in the car when the window was crazed. As would be expected, more fragments were produced by shattering, rather than by crazing toughened glass. There was no significant difference in the number of fragments produced between crazing toughened & laminated glass. When toughened/laminated screens were crazed, the fragments recovered inside the car were from the inner surface.
