While collisions still occur, the presence of photo enforcement often reduces the damage to people and property. Lower speeds also directly equates to less severe collisions. The average mid-sized car weighs about 3,500 lbs. At 40 mph this car in motion represents over 253,000 joules of kinetic energy (energy converted to damage during a collision). At 51 mph this same car represents over 412,000 joules of kinetic energy. While the car traveling at 51 mph is still only exceeding the speed limit by 28%, that car will possess 63% more energy to create damage when involved in a collision. Less kinetic energy means less damage to people and property during a collision. Moreover, Paradise Valley is a residential community. As such, our main roads of Lincoln and Tatum run through quiet neighborhoods with driveways connecting to these arterials. Photo enforcement is an important tool for maintaining the quality of life for these residents.