The City of Vacaville offers a wide variety of on and off street bikeways. These include:
Class I - Bike Path: A dedicated exclusive bike path meant for bike and pedestrian traffic.
Class II - Bike Lane: A marked lane exclusively for bike travel on roadways.
Class III - Bike Route: Sometimes marked, Bike Routes offer advantages compared to alternative routes. Bicycle riders must share the roadway with other vehicles.
Bicycle riders should always use caution while riding, particularly on a Class I Bike Path or a Class III Bike Route, where the route is shared with pedestrians and vehicles.
The Solano Transportation Authority has a lot of valuavle information on biking in Solano County. That information can be found here.
Here are some bike safety rules provided by the California Department of Motor Vehicles.