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Speed limits are ultimately determined by safety. In California, the speed limit on residential streets is (generally) 25 mph. But if there is a proven history of speeding (usually resulting from multiple complaints from multiple residents over a period of time) in a particular neighborhood, speed bumps may be installed, along with a lowering of the speed limit to 15mph.
2nd Answer:
Traffic engineers test how much friction various pavements have, and how much friction various tires have. They look at those friction also for wet pavements. From that they calculate what distance a vehicle might need to stop in and be safe. Using the distance and friction factors, they calculate the maximum speed an average vehicle must go in order to stop in that calculated safe distance.
What else can I help you with?
When the speed limit is not posted the default speed limit recommends that drivers maintain a speed of mph on the highway and mph in the city?
55 on the highway, and 30 in the city.
In busness and residential districts the speed limit is 30 mph unless otherwise posted?
is 30 MPH in residential,
On a new york state highway where there is no posted speed limit the fastest you may legally drive is?
The default speed limit on New York state highways where no speed limit is posted is 55 mph.
The speed limit for passenger cars in urban districts?
70 mph daytime/ 65mph nightime 85 80 MPH (daylight hours only) 60 miles per hour daytime 60 nighttime 55 Day time 70 & Night time 65.
What is the speed limit for business areas?
Business and residential areas is 30 mph
What is the maximum speed limit for traffic in a built up area?
it is 30 mph
What is the max speed limit if there is speed limit 45 mph?
45 MPH
Speed limit of road with humps?
The humps do not affect the speed limit. Other signs will indicate the speed limit. In most towns and cities the default limit is 30 mph, but in some places it can be less.
When the posted speed limit is 70 mph the minimum speed limit is?
40 mph
In business and residential districts the speed limit is 30 mph unless otherwise posted.?
True
The Speed limit was 95 kmh what is the speed in mph?
59 mph
If your vehicle is parked on the road at night When must you use sidelights?
were the speed limit exceeds 30 mph
