Comparison Garmin Drive 40LM vs Garmin Drive 40LMT

The presence of a TMC receiver in the design of the navigator.

TMC (Traffic Message Channel) is a technology for transmitting information about adverse traffic situations — traffic jams, accidents, weather conditions, etc. Transmissions are most often carried out in the FM band, similar to conventional radio broadcasting; therefore, you do not need to access the Internet to obtain important traffic information, although some TMC services may be chargeable.

It is worth bearing in mind that a network of appropriate stations is required to use TMC. Such networks exist in many European countries, but their development in the post-Soviet space began relatively recently. Therefore, before buying a navigator with this function, you need to check whether TMC coverage is available in your area.