Why are stops signs not recommended for speed control?
The placement of one or more stop signs to slow traffic will often have the opposite effect. Drivers will go faster between the signs to make up for “lost” time. In addition to speeding, the drivers will need to accelerate and decelerate for each sign. A constant vehicle speed is generally safer for both vehicles and the others users along a highway.
NYSDOT Highway Design Manual. Go to chapter 25 – Traffic Calming