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The TomTom RDS-TMC Traffic Receiver gets traffic information on the go, to your GO. For the one-off cost of the receiver you can get traffic updates and let your GO reroute you around congestion. RDS-TMC is only available in: Austria, Belgium, Czech Repub .....

User Reviews about TomTom RDS-TMC Traffic Receiver - TMC module for GPS receiver

I have a tomtom GO 730 and this receiver works great with it. I was skeptical at first because it was so cheap. I live in MN and I always have a good signal. There are a few times when I didn't believe the GPS, but it was right about the traffic and there I sat.

The delays are not always accurate. It might tell you there is a 1 or 2 minute delay, but it is sometimes longer. I am not sure if this is the fault of the GPS unit or the data transmitted (I would assume the data). It seems to only have traffic info for major roads, at least in my area. It also doesn't seem to account for traffic lights.

For the price I don't see how you can go wrong. It is 1 1/2 times the month service fee of Tom Tom's traffic service and there is no guarantee that is any better.

Like one of the other posters said, the connector pin is straight so I had to adjust the height of my GPS unit off the dash. I wish it had and angle connector, but oh well. -- Great Value

Someone had said earlier make sure you plug it in all the way. You may think it is plugged in all the way but it isn't. That saved me. When it arrived I tried it out and it wouldn't register it. To get it to register I had to litteraly stick it in the adapter and push the tom tom down on it. I did the frequennt update option and it really saved me also said earlier make sure you need a male to female connection and not a usb connector. Overall I would reccommend this product as It allwed me to see in time the delay I was looking at and offered a reroute. I recommend. -- Worked great

So far I'm very pleased with this product.

The traffic reports in my area are quite accurate and so far I did not have any reception issues in my area.
Interestingly, when there are delays, the delay time is usually higher then the actual time spent in traffic. For example, the warning I would get is of a 10 minutes delay, but I would actually spend about 4-5 minutes in traffic. Not sure if this is some issue with the traffic receiver, the GPS receiver or with their interaction. But I guess it would be much worse if it was the other way around. Also, so far no instances of traffic not reported.

The only issues I do have is that the connector to the GPS unit is somewhat long and straight and hence require me to attach the GPS receiver a bit higher on the windshield then I would do otherwise. But I guess I can always buy some adapter for it.

In short, don't pay a monthly traffic subscription for life(!) as this one does an excellent job for the subscription cost of about one month! -- Excellent Value for your money

I bought the TomTom 540T and one reviewer said that you "must" have this antennae to make the traffic portion work...so I just went ahead and bought it. Well, it doesn't fit in the gps because there is no port for it--and the traffic receiver is built into the 540T's lighter-power plug.
It's not worth the headache to return it, and I have a friend who has the model that uses this antennae, so I'm giving it to her (even though she already has one). But just an fyi--if you have this GPS, (http://www.amazon.com/gp/product/B003B3P2CE/ref=oss_product)it doesn't work and you don't need it. All you have to do is plug the thing into the lighter outlet BEFORE you turn it on, and it will recognize it.
-- If you have a 540T you do NOT need this, as one reviewer of the 540T says...