As of 2007, the average lengths of compact sedans and compact sport utility vehicles in America are 177.2 inches and 172.3 inches, respectively. Medium sedans and SUVs are 10 to 20 inches longer than their compact counterparts, while large cars are longer by a further 15 to 20 inches.
There are many types of accelerants throughout the industry. Accelerants are usually a mixture of solvents that are organic based. Examples of different types of accelerants include: Kerosene, paint thinner, Gasoline etc. These substances are also referred to as petroleum distillates. In the automotive industry however, there are only a few accelerants that are of vital importance. These are; petrol, diesel and lubricating oils [1].
Occupancy sensors have a limited sensing range. Sensors can detect slight hand motion up to 3 m and full body motion up to 10 m. Ultrasonic sensors offer better detection than PIR sensors. In rooms where it is critical that lights do not go off incorrectly, dual technology (PIR and ultrasonic) sensors can be used. Occupancy sensors can reduce lighting energy use by 30 to 60%, depending on the frequency of room usage.