Amman is the most unfriendly city for pedestrians in the known world. They have two sorts: the quick and the dead. And the quick have to be very quick indeed. Our 46 star hotel is besieged by two two and a half throughways. It is almost impossible to cross to the other side where the rest of the city waits for you. If you manage to make it to the central reservation you might not be able to go further and find it impossible to return. Perhaps by 2am you might get across only to be mown down by a car with no lights that you did not see. Instead there is a foot bridge some distance away and in the direction you don't want to go. Some people in desperation stop a taxi and get driven a mile one way , round a flyover and back to opposite to where you started but on the right side of the road. A dinar well spent.
Personally, I prefer Hutton traffic.