Abstract

The excess speed of trucks and buses is a factor that causes accidents, in addition to the impact on the use of fuel to be wasteful so that operational costs will have a significant effect on fuel needs. In a previous study mentioned several trucks and buses transportation companies. Many install speed limiter that can reduce the potential for accidents by limiting speed, which ultimately has the potential to reduce fuel costs, some of the literature that assembled speed limiter is excessive speed which is directly responsible for the cause of the accident and the level of impact. Reducing speed by 1 km / h can cause a risk of accident 3% less. The frequency of accidents and the death rate increases more than proportionally when the speed increases, other research also discusses the use of fuel in trucks and buses can also reduce CO2 emissions, the purpose of this study is to improve safety by increasing speed and saving fuel. This research method is to install Speed Limiter Device (SLIFA) on the Truck and Bus engine, which have done by filling the fuel thoroughly to the full with flat road conditions and climbing hills.