accrual
accumulation
auto
automobile
busy
cars
city
collapse
congestion
crowded
day
drive
emission
environment
freeway
fuel
fumes
highway
interstate
jam
journey
lane
line
motion
motorway
pollution
queue
road
row
rush
rush hour
sign
signboard
slow
snarlup
street
stress
stuck
tailback
traffic
traffic congestion
traffic jam
traffic tieup
transport
transportation
travel
urban
vacation
vehicle
waiting