By default the polyline comes with 6 decimals so we avoid to use 5 by default

server/lib/python/cartodb_services/cartodb_services/tools/polyline.py

@@ -51,9 +51,7 @@ def polyline_to_linestring(polyline):
     """Convert a Mapzen polyline shape to a PostGIS linestring"""
     coordinates = []
     for point in polyline:
-        # Divide by 10 because mapzen uses one more decimal than the
-        # google standard (https://mapzen.com/documentation/turn-by-turn/decoding/)
-        coordinates.append("%s %s" % (point[1]/10, point[0]/10))
+        coordinates.append("%s %s" % (point[1], point[0]))
     wkt_coordinates = ','.join(coordinates)
 
     try: