For example, a draft proposal from Germany's National Platform on the Future of Mobility task force recommended a blanket 130 km/h (81 mph) speed limit across the Autobahn to curb fuel consumption and carbon emissions. Speed limits may also be set to reduce the environmental impact of road traffic (vehicle noise, vibration, emissions) and as a political response to local community concerns for the safety of pedestrians. This followed a report in which the WHO estimated that some 1.2 million people were killed and 50 million injured on the roads around the world in 2004. The World Health Organization (WHO) identified speed control as one of a number of steps that can be taken to reduce road casualties. It is often done in an attempt to improve road traffic safety and reduce the number of casualties from traffic collisions. There are several reasons to regulate speed on roads. On highways, unmarked speed bumps and drifting sand create additional hazards" according to an American government travel advisory. Additionally, "drivers often drive at high speeds unsafe driving practices are common, especially on inter-city highways. Although speed limit and safety distance are poorly enforced in this country, specifically on the Abu Dhabi to Dubai motorway (which results in dangerous traffic according to a French government travel advisory). The highest posted speed limit in the world is 160 km/h (99 mph), which applies to two motorways in the UAE. The first numeric speed limit for automobiles was the 10 mph (16 km/h) limit introduced in the United Kingdom in 1861. Speed limits may also be variable, or in some places nonexistent, such as on most of the Autobahn in Germany. Speed limits are commonly set by the legislative bodies of national or provincial governments and enforced by national or regional police and judicial authorities. Speed limits are generally indicated on a traffic sign reflecting the maximum permitted expressed as kilometres per hour (km/h) and/or miles per hour (mph). Speed limits are used in most countries to set the legal maximum speed at which vehicles may travel on a given stretch of road.
in what appeared to be a reckless manner."
at a rate greater than twenty-five miles per hour. In 1920, a pastor was fined US$10 for "overspeeding his machine.