Traffic problems on the R4? Which one might that be?
Every time I take H3 (Petkasem Highway) south to Chumpon or north to Hua Hin I wonder how it is possible that there is so little traffic, since it is the only highway connecting Bangkok with Malaysia, practically.
The nice new 4 lane goes from the port east and connects with the road between Ranong and Chumpon, direction Chumpon. South of Ranong the road is bearable, direction Khao Lak and Phuket; can't see the ocean the whole way down, if you're on a big bike I recommend to take the H3 south as far as possible; if you're heading to Phuket, go direction Pha Nga, some nice curvy roads in nice scenery, where you're better off with a SV650 than a 1000cc Triumph or Beemer.