Try this:

[tmc-http]
start=1
enabled=1
servers.size=1
servers[0].url="http://zippy.naviextras.com/services/tmclite/data/nng-igo-tmc-iphone/0/"
dt_dl_0=60.0 ;Update interval in seconds jams
dl_dist_0_km=50.0 ; the radius in kilometers