A very thorough and complete traffic calming approach can be found in Dutch and Flemish “woonerven” (literally “living courtyards” or “home zones”). Often, “woonerven” are smaller residential streets that were redesigned to give residents a sense of peace and quiet, while removing car traffic as much as possible without entirely banning it.
Here’s a typical example. As you see in the picture, there are several traffic calming measures within this single street: bollards, tiles instead of smooth asphalt, a raised road surface continuous with the sidewalks, and trees that act as obstacles.
It must be noted, however, that an official “woonerf” in Flanders is not just about street design. These streets are also marked by a specific road sign.
This sign conveys to drivers that the street they are about to enter is a “woonerf” and that the following rules apply:
- Pedestrians can use the full width of the public road. Playing on the road is allowed.
- Drivers may not endanger or hinder pedestrians. If necessary they must stop.
- Speed is limited to 20km/h.
- Parking is forbidden, except where there are visual markings like different surface colors, a letter P or traffic signs allowing parking.
I guess similar approaches exist in other countries…
PS: An interesting introduction into traffic calming, especially for novices 
