The road condition is mostly hard surface bitumen/concrete and generally well maintained and is wide (two lanes one way) in most of the traveling distance, except at certain range of KM0.2-0.5 and KM 10.6 – Sirithara La Villa, where are the single lane with 2 way traffic. The road shoulder is noted in about 80% of distance covered. The road is busy with many junctions, long bridge, U-Turn, T-junction, Slope and Restaurant beside the road with vehicles parked alongside. Road shoulder measuring about 1 maters are available on most of the bridge thus providing the mean of escape in any hazardous situation.
There is long bridge with 1.7 km (Tinsulanonda Bridge) in part of the road. On the bridge there is no road shoulder for vehicle escape in any hazardous situation.
The main hazard observed for this route are junction (both with and without traffic lights), U-turn, many heavy and long vehicles, wind on the bridge (sometime heavy), slope up/down some part of the road, many curve and motorcycle come across the wrong traffic way. Some of the hazards and the required controls are mentioned towards the end of this report.