air temperature
boots
car
caution
celsius
chain
coefficient of friction
cold
cold weather
cold weather protection
commute
county road
crossing
danger
dangerous
dead of winter
driving
extra legroom
fall down
falling over
for the winter
freewheeling
freezing cold
freezing temperatures
friction
frictional force
frozen
going to school
heavy snow
ice
melt
minus
national highway
nonslip
note report
person
puss in boots
regulation
road
road surface
rut
safety
school road
scoop
seasons
skate
slick
snow
snow melting
snow removal
snow shoveling
snowfall
snowmelting agent
snowplow
snowy road
spin
stud
student
studless
studless tires
sun
temperature
throb
time
walk
walkway
water
way
winter
xy scatter