How did we get on talking about Long Island parkways now? But since I DO live near the Southern State Parkway, I know the biggest bottlenecks in Nassau County are CIP/Belt (no suprise), 18 (EB ONLY), 19N (lots of cars get off there for Hempstead), 22 (EXTREMELY inefficent ramps onto and off of the Meadowbrook), 27 (Same reasons as 22), 28 (The ramps from the parkways become EXIT ONLY lanes for this interchange, leading to A LOT of weaving). 28A (NY 135) actually tends to not be as backed up, but it has really inadequate ramps.