Dependant on the laws of the state or country that you are driving in.
In the UK it is 30 MPH. Other countries may have other limits
70
50 mph
Dallas
60km/hr
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.
A realistic speed limit depends on the circumstances, the vehicle, the conditions and the ability of the person in charge. A speed limit suitable for race cars would not be suitable for urban areas.
70 MPH
wrong.
65, except through urban areas, where it's even lower.
Where I live it is 100kmph
35 mph in an urban or residential setting. 55 mph on a highway.
Urban: 30-40 km/h Rural: 40-60 km/h All speed limits are universally ignored.