<p>Take Rt 1 north from Princeton and interesect the NJ turnpike in New Brunswick using NJ RT 18 to jump the 1 mile gap between them. It is about 12-15 miles north of PRinceton where you take 18 over to the TUrnpike, which is I-95. North. FOLLOW THE SIGNS TOWARDS THE GWB, and NOT THE ONES TO THE LINCOLN TUNNEL. </p>
<p>As you draw parallel with NYC, you will come up to the interchange with I-80. TAKE I-80 WEST(this backtracks a few miles) and in about 7 miles or so take the Garden State Parkway NORTH. </p>
<p>About 15 miles north on the Garden State Parkway, you merge into I-287/87 heading East towards the Tappan Zee bridge. Cross the bridge, stay to the left after you clear the tolls on the far side of the bridge, and merge left onto 287 which is the cross westchester expressway. There is a lot of construction there and several places where you need to keep your speed under control if you have a heavy foot.</p>
<p>As you proceed East on 287 past White Plains, you will have a choice of how to proceed up towards New Haven. a) Merritt Parkway north b) I 95 North. They essentially run parallel to each other about 4 miles apart. There is no truck traffic on the Merritt, but it can back up from volume just a bad as 95. The Merritt runs through the back country of Greenwich and is heavily wooded. I95 runs along the coast and is less secenic, but perhaps more informative of what is around you. </p>
<p>If you take the Merritt, get off of 287 at the Htuchinson parkway exit just past white plains, and take the Hutch North.....This "turns into" the Merritt at the state line. The Merritt will run all the way to to New Haven (name changes over to the WIlbur Cross Parkway eventually), and you can come into New Haven the "back way" past the Yale Bowl by taking the Merritt all the way to exit 57 (CT rt 34) or 59 (Whalley Ave).</p>
<p>If you insist, you can jump back over to I95 in Milford at exit 54 JUST AFTER YOU CROSS THE SIKORSKY BRIDGE.</p>
<p>If you prefer I95 all the way up the CT coast, just take 287 until it terminates into I95, and take I95 north all the way to New Haven.</p>
<p>I doubt you will be able to make many adjustments on the fly, but the best traffic reporting is AM WINS 1010 with reports on the "1" s of the hour, every 10 minutes. In CT WEBE westport FM 107.9 will have some updates on 95 and the Merritt parkway.</p>
<p>NYC has a lot of variance in its traffic backups. If it were clear, Id probably follow the GWB to 9W north route suggested earlier, but I think the Tappan Zee is less prone to error. You can still end up sitting in traffic. If it is clear, it will take you about 3 hours to get to New Haven from Princeton. In any case, see if you can clear either the Merritt or i95 up the CT coast before 4PM. Otherwise you are quite likely to be sitting for a while. (This means don't stop for lunch).</p>