Front Plate Required: No
Area Codes: 405, 539, 580, 918
License Plates:
Windshield Stickers:
Road and Highway Signs:
County Roads:
Highways:
Highway Adoption:
Historical:
East of Oklahoma City, the state is fairly green with plentiful broadleaf trees. West of Oklahoma City and into the panhandle, there are fewer trees and it looks more like the typical midwest grasslands. In all parts of the state, the dirt looks red when exposed. In 2016, Oklahoma changed its standard license plate, so you may find one of two types, depending on coverage year. The pre-2016 Oklahoma license plate is very similar to Indiana's current plate, and the post-2016 plate looks very similar to the standard license plate in Kansas.
Greenery on the east side
Central state transition
Dry grasslands on the west side
Red dirt
Pre-2016 standard plate
Post-2016 standard plate
Many intersections have green markers unique to Oklahoma, with just two or three white numbers. Smaller signs with only two numbers appear in older coverage, but newer coverage features larger signs with three numbers. The top number ranges from 1-77, referencing the county this intersection is in. The list is in alphabetical order, starting with #1 Adair County and ending at #77 Woodward County. The middle number is a reference for state maintenance that you can read more about here. The bottom number is optional, and lists the distance into that section this sign currently is.
Large green sign with three numbers
Small green sign with two numbers
Maintenance number map
State highway bollards will vary by county, but drainage tunnels and grates are generally marked with three yellow reflectors or a similar yellow substitute. Most signs have cross-braces behind them, which is most apparent when two or more signs are arranged horizontally on a single post.
Three yellow circles mark drainage
Temporary bollard for drainage
Cross-braces behind signs
Construction signs are encouraged to have bold orange reflectors on the legs, but it's technically not a state requirement. Outside of small towns, many roads at county designation or lower don't have any signs, resulting in crossroads that are completely unmarked. Without the protection of trees, the winds are higher in the west, where you will find wind farms and signs torn up by wind damage.
Orange legs on construction hazard sign
Unmarked crossroads
Wind farms in the west
Wind damage to green sign
Road sign ripped off by wind
Each county district in Oklahoma is a little bit different, some with quirks more obvious than others. Higher variation means less state-specific meta, but it also means you can narrow down the area to search if you're familiar with a county's particular style. For example, most counties in the fifth district put their abbreviations on street signs.
BC - Beckham County
BL - Blaine County
CU - Custer County
DW - Dewey County
HM - Harmon County
KW - Kiowa County
RM - Roger Mills County
WA - Washita County
New Mexico also uses three yellow circles to mark drainage.
Oklahoma
Oklahoma's post-2016 license has the same blue & white colors as the standard plate in Kansas.
Oklahoma
Oklahoma's pre-2016 license has the same blue & white pattern when blurred as the Indiana standard plate. Indiana license plates appear a darker shade of blue and have a colored registration sticker, but it is not the only state with the blue-on-the-left license plate pattern.
Oklahoma
