quiz time!

[Hanno Spoelstra]

Originally posted by Hanno Spoelstra
1) Why were the windows of the nr. 13 cab slanted inwards?

Originally posted by Keith Webb
To quote from Bart's Observer's fighting vehicles P. 212:

" The new cab had reverse-slope windscreens to reduce glare and also to prevent the piling up of snow, slush, etc."

Another reason was for blackout convoy driving so the driver could see the pinspot tail lamps of the vehicle ahead without reflections.

Close enough ... this is the answer I was looking for:
"The windshield slants forward placing the surface of the glass square with the driver's line of vision to the road and reduces the possibility of reflected light interfering with the driver's vision. It is exceptionally effective during blackout operations. "
Source: Ford instruction book Special Pattern Vehicles (third edition) p. 208.

H.