A developer wants to provide access to a new building from a driveway placed 1000 ft upstream of a busy intersection.  He is concerned that queues developing during the red phase of the signal at the intersection will block access.  If the speed on the approach averages 35 mi/h, the density is 50 veh/mi, and the red phase is 20 sec, determine if the driveway will be affected.  Assume that the traffic flow has a jam density of 110 veh/mi.