To identify your “Red Zone” take out a map of where you live and draw a five-mile radius circle.  This is where you're most likely to have an accident. The area you know best and where you feel most comfortable is actually the one of most dangerous, we call it the Red Zone because it's the most dangerous zone for bikers.
While there's not a lot of study as to why accident rates are so high here, applying a little logic helps make sense of them.
Starting your ride, the first five miles:
• This is when you are least focused on the ride
• This is when your mind and muscles are least attuned to the bike
• This area will generally have the most traffic, most side streets, and most intersections with potential “right of way” violators
• This is the most familiar area to you, which often means you're least attuned to the road around you
• This area is usually ridden early in the day, when “cage drivers” are still just half awake.
Ending your ride, the last five miles:
• This is when you're the most tired
• This is when you're most likely to let down your guard
• This when you're more focused on the destination instead of the ride
• This area is full of traffic hazards not found on the open road
• This area is filled with tired and distracted cage drivers.