New cars are being made with higher quality and their engines are capable of higher speeds. Roads are safer than the earlier roads. During times of fuel shortages and rationing, speed limits were lowered to reduce fuel consumption. Speed limits have been adjusted to account for the human reaction time and modern engineering to help keep people safe.
Speed limits change for lots of reasons. Limits have changed to conserve fuel and for accident reduction.
Perhaps, the changing(increasing) number of population which most likely results to increase in the demand for transportation and therefore to the change it speed limits to regulate traffic and safety of commuters and drivers.
Because people are going too fast on the road.
The car have become faster and there are more cars on the road so there is a heigher risk of crashing
for the lulz British roads are typically very narrow while there are a few "highways" as we know them they still are small compared to our interstates. Because of the narrow, winding roads and the high cost of petro "gasoline" speed limits have remained on the slow side.
As a fuel saving measure during the oil embargo crisis.
becasue people are stupid and drive to fast lol
Parts of the German Autobahn do not have posted speed limits.
Yes Germany does have speed limits but on a lot of motorways they dont :)
The jobs changed from being a slow paced, low production working environment to a fast paced high production environment. The factories and other jobs completely changed in ways like Health and Safety, production speed, and the age restriction and limits.
They are not allowed to exceed speed limits
Speed limits are set by whatever level of government owns that particular roadway.