14:31 Jul 27, 2011 

Good translation. Got a couple of suggestions for your consideration:
1. Your quoted text of "Great Niagara Circle Route" has a typo. It should be "Greater Niagara": There are different administrative levels of Niagara: Niagara County, Niagara town, and Niagara City. The Circle route encompasses the whole county. That's why it uses "greater."
2. The signed tour routes have different signs from the ordinary "road signs" (交通标识). They are not Traffic signs but some specific signs like winery signs, waterfront signs, and so on along the route to let drivers know that they are following a particular route. Of course, there are also the tourist signs. (By the way, sometimes those scenic route are not all independent routes but following ordinary roads or streets already there with designated scenic routes.)
3. I'm not sure if "圆弧"="circle" for the Route is really in a circle.

10:20 Jul 27, 2011 

可以考虑驱车沿环尼亚加拉圆弧路线旅行，此处由四处沿途具有交通标识的景观线路集合而成：韦兰运河大道，尼亚加拉瀑布大道，伊利湖北岸环道和滨水信任小道。

08:57 Jul 27, 2011 

签约听起来怪怪的。