Tips

Video Examples:

if it's an actual curb (raised off the road) then it's undriveable
halo around the light is not the light
far off tail lights should def be marked as movable
a road is anywhere nobody would look at you funny for driving a car
if it moves with the reference frame of your car, it's "my car"
"none of our segmentation relies on being particularly accurate" that's just for the final processing. the segnet training needs them to be very accurate, as a correct thing marked wrong will actually be penalized A few additional annotator notes that I have distilled from the channel (let me know if anything is wrong):
Do mark the reflective lane turtles, but only if they are used as lane markers
Don't mark any interior cross-hatching that may appear at a divider, only mark the exterior lane demarcation.
Mark anything that is drive-able as road (including driveways, parking lots, and gravel shoulders)
Movable includes anything that could move (generally under its own power) including parked cars and trailers, but not trash cans.
Marking lane markings and vehicles out on the horizon is tough, but important. Use your human intuition for what is a vehicle or lane marker.
If using img-labeler, anything without a mask will be marked as undrivable.

0 - #ffffff - empty

1 - - sky (deprecated, now undrivable)

2 - #402020 - road

3 - #ff0000 - lane markings (drivable, right now includes some non lane markings, remove these!)

4 - #808060 - undrivable

5 - #00ff66 - movable (split into vehicles and people/animals?, actually don't)

6 - - signs and traffic lights (deprecated, now undrivable)

7 - #cc00ff - my car

If you're really interested, here is a whole study done by the Montana DOT on high contrast markings: https://www.mdt.mt.gov/other/webdata/external/research/docs/epsl/bead_technology/EVAL_MAR16-1.pdf