Falling off on new road surface

Hi all, wanted to canvas opinion, fell off my bike in September on a flat, straight and new section of road (had been down a couple of months) leading up to a junction, I broke my ribs and have not been out since! I perceive this to be a worse hazard than pot holes and no longer have the confidence to go out in any sort of wet weather if the roads are so slippery in certain places, I am not a new cyclist and have frequently exercised caution especially going round corners, I unclip the relevant foot incase of slippage, hence on this occasion I was not unclipped because the road was straight and I was not expecting it, does anyone else have any experience of a similar occurence?

I contacted a personal injury company because I feel the road repairers should be putting down anti slip and they are at fault, I also believe that perhaps they are using better materials in the tarmac to perhaps make it more hard wearing and hence, I believe, more slippery in the wet compared to previous road surfaces. A friend of mine rides horses along the same stretch of road and the horse a couple of weeks ago lost its footing and she fell off, luckily no injury, which she has also commented that such an event has not happened to her before in many years of horse riding. The personal injury company said that they did not have enough to make a case. Do anyone have any views on this please?