In most european countries, cb radios can be operated without a registration. No fees or charges apply in most countries. 

The maximum transmission power (tx) is calculated for the near-range communication. Exchange of information in a convoi or with strangers within the approximate range make cb so popular.  

frequency norms

DE :80 channels FM 26.565-27.405 MHz
40 channels AM26.565-27.405 MHz
EU
 :40 channels FM26.965-27.405 MHz
40 channels AM26.965-27.405 MHz
EC :40 channels FM
26.965-27.405 MHz
EI
 :40 channels FM
26.965-27.405 MHz
40 channels AM26.965-27.405 MHz
PL :40 channels FM
26.960-27.400 MHz
40 channels AM26.960-27.400 MHz
UK
 :40 channels FM26.965-27.405 MHz
40 channels AM26.965-27.405 MHz
40 channels FM
26.60125-27.99125 MHz