Translation of "signpost" into Japanese

It acts like a signpost on the road, showing the traveler how many miles separate him from the next town.

それはちょうど,次の町までの距離を示している道路わきの道標のような役割を果たします。

IF YOU were traveling on an unfamiliar road or pathway, would you view signposts as a hindrance?

知らない道を通っているとしたら,道路標識を邪魔物に思うでしょうか。