The way the laws in MD are written, no. The speed limits are written to reflect the maximum safe speed in the rain, at night, with traffic. Other states realize this, so they say that in clear whether during the day you may drive faster (up to a certain speed) as long as 1) traffic allows for it and 2) you aren't driving in a reckless or negligent manner. Example: IMO, 55 Mph on the North end of 235 is a joke on a clear day without heavy traffic. I would consider 75 or even 85 Mph to be a safe speed as long as you aren't making sudden changes in direction or velocity, or weaving through traffic like an a**.