All this sohai highway do road joint is for u to get accident during rainy season one la..

When the road is bending, then do a road joint where the surface is rubbery. When that joint surface got water and wet, and when tayar is turning, that section will make the car skid one because no matter wad lj tayar u use also same..

Dunno why they dunno how to solve this problem, still wanna do road joint at bending curve with rubber joint 

Same happen for mex highway.. certain bend very laku accident also bcuz of this