both those expressions are fine, and commonly used. However they are very colloquial and may not always be appropriate in a more formal situation. In that event, you can say that the traffic (or the road) is very congested.
2 juillet 2015
0
0
0
Chock-a-block or bumper-to-bumper
2 juillet 2015
0
0
Vous n'avez pas encore trouvé vos réponses ?
Écrivez vos questions et profitez de l'aide des locuteurs natifs !