Home Assistant

Washington State DOT

The wsdot sensor will give you travel time information from the Washington State Department of Transportation (WSDOT).

First, you need to get a free Traveler Information api_key from the WSDOT API webpage. Just enter your email address to instantly get the key.

Once you have the code, create wsdot sensors by editing your configuration.yaml file as follows:

# Example configuration.yaml entry
sensor:
  - platform: wsdot
    api_key: XXXXXXXXXXXXXXXXXXXXXXX
    travel_time:
     - id: 95
       name: I-90 Eastbound HOV

Configuration variables:

  • api_key (Required): Your api_key from WSDOT.
  • scan_interval (Optional): How frequently to query for new data. Default: 3 minutes.
  • travel_time array (Required): List of routes.
    • id (Required): Name of the route.
    • name (Optional): Name of the route. Default just uses id.

Figuring out which Travel Time ID (id) is associated with your routes is a bit of a challenge. If you visit http://wsdot.com/Traffic/api/TravelTimes/TravelTimesREST.svc/GetTravelTimesAsJson?AccessCode=[your_api_key_here] substituting your api_key, you will get a list of all available routes. Search through it and then find the key TravelTimeID. That tells you the number you need.

Some common examples include:

 73 Issaquah-Seattle (WB PM)
 74 Seattle-Issaquah (EB AM)
 75 HOV Issaquah-Seattle (WB REV) 
 76 Issaquah-Seattle (WB REV)
 77 HOV Redmond-Seattle (WB PM)
 78 HOV Seattle-Redmond (EB AM)
 79 Redmond-Seattle (WB PM)
 80 Seattle-Redmond (EB AM)
 81 HOV Redmond-Seattle via I-90 (WB PM)
 82 HOV Seattle-Redmond via I-90 (EB AM)
 83 Redmond-Seattle via I-90 (WB PM)
 84 Seattle-Redmond via I-90 (EB AM)
 85 HOV Redmond-Seattle via I-90 (WB REV)
 86 Redmond-Seattle via I-90 (WB REV)
 89 Bellevue-Seattle via 520 (WB PM)
 90 HOV Bellevue-Seattle via 520 (WB PM)
 91 HOV Seattle-Bellevue via 520 (EB AM)
 92 Seattle-Bellevue via 520 (EB AM)
 93 Bellevue-Seattle via I-90 (WB PM)
 94 HOV Bellevue-Seattle via I-90 (WB PM)
 95 HOV Seattle-Bellevue via I-90 (EB AM)
 96 Seattle-Bellevue via I-90 (EB AM)
 97 Bellevue-Seattle via I-90 (WB REV)
 98 HOV Bellevue-Seattle via I-90 (WB REV)

WSDOT does provide information about ferry schedules, mountain passes, tolls, etc. but so far only Travel Time data is available in this platform.

Here’s an example of the sensor in use: