Hah, y'all call it a "gapers' block" up there? I think "rubbernecking" might be a more universal term, but I don't know. Maybe it's just me.
Nice work on the Roadkill bit.
I made one change under traffic jam:
from: If you do not expect to be moving at a normal speed soon, respond to the prompt by picking the appropriate situation (moderate, heavy, or standstill).
to: If you do not expect to be moving at a normal speed soon, tap "yes" and pick the appropriate situation (moderate, heavy, or standstill).
"pick the appropriate situation" could probably stand to be rewritten as something like "select the appropriate traffic density level", but I haven't had my coffee yet.
The divisions of the "hazard" section read a little confusingly. The "on road" / "on shoulder" headings are not much bigger than the specific report headings. The same problem is sort of averted in the "map issues" section later because of the large intro paragraph. Maybe it would be better to use simple bold print instead of headings for the specific report types, like--
"Object on road. Report objects that are large or mobile, or otherwise likely to cause drivers to slow down abruptly or swerve."
That would also avoid cluttering the table of contents.