Inquiry
What is the logic for the sign codes in the signs.csv file (eg PS-65C, SP-477B, etc)? Do you have a guide/legend to help decipher what Sign Description the codes represent?
Assigned Agencys Response
Greetings,
The sign code is a unique identifier for a sign design, and it generally has one sign description. As an example, SP-477B sign description is “BUS STOP SIGN (BUS & HANDICAP SYMBOLS) NO STANDING W/ SINGLE ARROW”. DOT does not maintain a separate guide/legend of sign codes. Excel pivot tables or other software can summarize the list of codes and their descriptions, if desired.
For most signs, all sign instances with the same sign code are physically the same. However, there are several exceptions where sign text can vary. “SPECIAL,” “INSERT” AND “RIDER” are examples of such codes. “SPECIAL” signs are often used for events, or for ceremonial street renaming, and “INSERT” AND “RIDER” are used for signs that appear on or below other signs. These generic codes have fallen out of use at DOT, but the data still contains examples.
DOT also uses generic sign codes for Bus Stop route, destination and locator panels, for some speed limit signs, and in several other cases. These sign codes have descriptions that indicate there is a variable element to the sign. An example would be the bus stop route sign, with the description “LOCAL MTA BUS ROUTE PANEL (TEXT TO BE MODIFIED AS REQUESTED)” or a speed limit sign, with the description “SPEED LIMIT XX SPEED CHECKED BY RADAR (XX = SPEED TO BE DETERMINED).”
Thank you,
-NYC Department of Transportation