initiative
gridlock
emission
congestion charges
bustling
congestion
rush hour
resident
viable
obtain
substance, especially a gas, that goes into the air
an important action that is intended to solve a problem
able to be done, or worth doing
a payment that you make each day for the right to drive into a city centre, introduced as a way of reducing traffic
a ... place is full of noise and activity and is usually pleasant and interesting
someone who lives in a particular place
the time of day when there are a lot of cars on the road because most people are travelling to or from work
a situation in which a place is crowded with people or vehicles, so that it is difficult to move around
a situation in which there are so many cars on the roads that traffic cannot move
to get something that you want or need, especially by going through a process that is difficult
