This is the 15806th most frequent Turkish word.
trafikteki
"Related to or in traffic."
'Trafikteki' in this example describes 'araçlar', implying the vehicles are 'in the traffic'.
Trafikteki araçlar dikkatli bir şekilde ilerliyordu.
The vehicles in the traffic were moving carefully.
Here, 'trafikteki' is used as an adjective modifying 'yoğunluk', describing the congestion as being 'in the traffic'.
Trafikteki yoğunluk nedeniyle işe geç kaldım.
I was late to work due to the traffic congestion.
In this sentence, 'trafikteki' acts as an adjective for 'kurallara', indicating that the rules pertain to 'in the traffic'.