Amsterdam is surrounded by the ring road A10. The S-routes indicate the city routes that guide motorists into the city centre. Each exit of the ring road A10 is numbered, from S101 to S118. The S-routes offer automobile traffic the fastest and most direct way into the city.
The S-routes are (from the north-west, counter clockwise):
S.101: Westpoort (harbour)
S.102: Westpoort (harbour)
S.103: Haarlemmerweg (towards Halfweg/Haarlem)
S.104: Bos en Lommer
S.105: Geuzenveld
S.106: Osdorp
S.107: Sloten
S.108: Amstelveen
S.109: RAI
S.110: Amstel
S.111: Weespertrekvaart
S.112: Duivendrecht
S.113: Watergraafsmeer, Diemen
S.114: Zeeburg (Amsterdam-Oost, IJ-burg, Oostelijk Havengebied)
S.115: Nieuwendam (Amsterdam-Noord)
S.116: Noord-Volendam (Amsterdam-Noord)
S. 117: Kadoelen (Amsterdam-Noord)
S. 118: Oostzanerwerf (towards Oostzaan, recreational area ‘t Twiske)
Read everything about paid parking in Amsterdam
The website of the ANWB (Dutch automobile association) shows real-time traffic information for Dutch roads.