Compare with garden fence, PVC fence not rot, warp, crack and otherwise disintegrate. once it is set in concrete, you can expect it to stay in place and stay strong for many years time.
Another reason is fence posts made of PVC is the easy with which you can attach rails or garden fence to the posts.
Rail fences in particular are very simple to install because the fence posts have pre-formed holes that match the rails, so all what you need do is insert the rail into the fence.
For road fence, with steel reinforcement installed in posts, is strong than garden fence, you also can move it to anywhere need,if a rail ever falls out ( unlikely, but possible) all what you need to is pop it back into place, when collision,hurt risk will be less than normal fences.
PVC Steel Ornamental Fencing
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