Night Speed Limit sign

What to do

After dark, obey the lower night speed limit shown.

Once it is dark, follow the lower white-on-black night limit even if the daytime sign above it shows a higher number.

Commons file is titled with the older code R2-3; the 11th Edition code is R2-3P.

Where it's used

Section 2B.23 requires both limits to be posted where the day and night speed limits differ. The Night Speed Limit plaque should be reversed colours, a white retroreflective legend and border on black, so it stands out from the black-on-white day limit. It may be combined with, or mounted below, the regular Speed Limit (R2-1) sign.

Don't confuse it with

• Speed Limit: The regular Speed Limit sign is black on white and applies at all times unless a night limit is posted; the night plaque is white on black and applies after dark.
• Combined Maximum and Minimum Speed Limits: The combined sign shows a maximum and a minimum speed, not a separate limit for night-time.