The city's centuries-old layout dictates its traffic patterns today.
Waterdeep lies on a plateau adjacent to a long mountain that shields much of it from the sea. In the southern third of the city, where the land slopes up from the harbor, the High Road and the Way of the Dragon are the two main south-north roads. These converge both at the Waymoot near the southern gate, and in the heart of the Trades Ward where the city is at its narrowest-bounded by Waterdeep Castle, high on a spur of the mountain, and the walls of the City of the Dead. The conjoined boulevard then splits to the north, continuing as the High Road, and to the west as a boulevard called Waterdeep Way, heading toward Piergeiron's Palace. In the middle of the city, six boulevards run north from Waterdeep Way, where they meet the road that encircles The Market. On the other side of the Market, five boulevards continue north.
The aforementioned boulevards, along with the Street of the Singing Dolphin in the Sea Ward, are the major arteries of the city. Hire-coaches and drays can be most frequently found on those streets, and traffic is at its most hectic there. Most other roads in the city run east to west, but regardless of their direction, traffic elsewhere is generally less hectic and thus safer to cross.Traffic Wardens
During particularly heavy traffic and at congested areas such as the great oval road around The Market, members of the City Watch double as traffic wardens. Wardens signal with small blue hand flags for traffic to proceed, and with yellow flags for traffic to hold. A traffic warden can often be heard blowing a whistle. When you hear it, look to the warden to see if you are being signaled. Failure to take care might result not only in accident but also arrest.