First time I had been on this strip of expressway. I was going the speed limit (55) after entering off the exist ramp after Lowe’s. I saw sign that right lane would be ending shortly. So I speeded up after checking my rear view mirror to see if it was clear. Then I saw the cop with the camera and then I saw the 45 mph speed sign. I saw he had me in his view so I didn’t try to abrupty depress on my brakes. How much lead way does a person having between speeding signs to stop?