DS EN 300674-2-1:2004 Electromagnetic Compatibility And Radio Spectrum Matters (Erm) - Road Transport And Traffic Telematics (Rttt) - Dedicated Short Range Communication (Dsrc) Transmission Equipment (500 Kbit/S/250 Kbit/S) Operating In The 5,8 Ghz Industrial, Scientific And Medical (Ism) Band - Part 2: Harmonized En Under 3.2 Of The R&Tte Directive - Sub-Part 1: Requirements For The Road Side Unit (Rsu) Pertains to Road Transport Traffic and Telematics (RTTT) systems: - with a Radio Frequency (RF) output connection and specified antenna or with an integral antenna; - for data transmission only; - ope