Effective May 1st, the speed limit for all vehicles will increase to 120 kilometres per hour on four more highways, according to the announcement from the director-general of the Highways Department already published in the Royal Gazette. The affected roads are:
Highway No 9 (Kanchanapisek), from Bang Khae to Mahasawat between 23+500km-31+600km in-bound and out-bound.
Highway No 35 (Rama II), from Na Kok to Phraek Nam Dang between 56+000km and 57+300km in-bound and out-bound; between 58+800km and 68+200km in-bound and out-bound; between 69+950km and 73+800km in-bound and out-bound; between 75+000km and 76+800km in-bound and out-bound; between 78+250km and 78+690km in-bound and out-bound and between 79+110km and 80+600km in-bound and out-bound.
Highway No 4 (Phet Kasem) from Khao Wang to Sra Phra between 160+000km to 167+000km in-bound and out-bound.
Highway 4 (Phet Kasem) Khao Wang to Sra Phra between 172+000km to 178+000km in-bound and out-bound and between 178+750km and 183+500km in-bound and out-bound.