Yes. That is why they are called traffic lights.
a traffic light
Argentina has trains that allow people to travel more easily avoiding traffic and saving a lot of money.
well we have cars, buses, taxis, trains and before that we had horses with carts... so yes we have traffic
it decresed the time you spend in traffic jams when you are driving
The opposite would be "light traffic".
It is not wagon trains. Groups of covered wagons are called prairie schooners. But we can also call it wagon trains, I guess.
trains have no traffic busses are heavy vehicles and cause potholes trains are more comfortable you can go to toilet trains can carry more passengers catching a bus is a fuss use your brain and catch a train
If a traffic light breaks most cities will assign a traffic cop to regulate traffic until the light can be fixed.
Amber, as in: Red - stop Green - go Amber - caution
your not so bright
A traffic light you seen change to green