Two people were injured in a highway accident in Danbury this weekend.  State Police say a motorcyclist cut across three lanes of travel to the exit 5 westbound off ramp as a 20-year-old Danbury woman was driving up the ramp.  The 57-year old New Hampshire man hit the back of her car.  The man and his passenger, a 55-year old woman, each sustained serious injuries.  They were transported to the hospital for treatment.The car driver was also taken to the hospital for evaluation of possible injuries.  Her passenger was not injured.  The right and center lanes of I-84 west were cloased for a couple of hours due to the crash.