If you have been considering a remodel of your existing basement or if you are concerned about safety and access you should install an egress basement window system. In fact, you might be required to have one.
The intent of the code is to keep you and your loved ones safe by requiring your home to have a means of egress in basement level living spaces. There are two reasons for this: to allow for an exit in case of an emergency and to provide access for emergency personnel should the need call for access to your basement.
Egress windows are required in every habitable space. If you have an existing home and you add a bedroom or finish a separate living space in the basement code requires that you install an egress window to serve these spaces.