US State Speed Limits API

This API delivers structured access to speed limit data across U.S. states, allowing users to query limits for urban, rural, and highway roads. It enables developers and analysts to integrate transportation policies into their systems easily.

The US State Speed Limits API provides programmatic access to official speed limit information for all U.S. states. The API supports queries to retrieve a full list of states, as well as detailed speed limit information for a specific state. Each record includes maximum speed limits for urban roads, rural roads, limited access roads, and the highest legal speed in each state. Designed for developers building transportation, logistics, or data visualization tools, the API emphasizes clarity, granularity, and ease of integration. It supports parameterized queries to avoid heavy data loads and improve flexibility.

API Documentation

Endpoints


This endpoint allows users to retrieve a list of all U.S. states included in the speed limits dataset.


                                                                            
POST https://www.zylalabs.com/api/9254/us+state+speed+limits+api/16720/get+usa+states+available
                                                                            
                                                                        

Test Endpoint

API EXAMPLE RESPONSE

       
                                                                                                        
                                                                                                                                                                                                                            [
    {
        "states": [
            "District of Columbia",
            "Montana",
            "Nevada",
            "South Dakota",
            "Texas",
            "Idaho",
            "Oklahoma",
            "Utah",
            "Wyoming",
            "Arizona",
            "Colorado",
            "Kansas",
            "Louisiana",
            "Maine",
            "Nebraska",
            "New Mexico",
            "North Dakota",
            "Michigan",
            "Washington",
            "Arkansas",
            "Indiana",
            "California",
            "Alabama",
            "Florida",
            "Georgia",
            "Illinois",
            "Iowa",
            "Maryland",
            "Minnesota",
            "Mississippi",
            "Missouri",
            "North Carolina",
            "Ohio",
            "Pennsylvania",
            "South Carolina",
            "Tennessee",
            "Virginia",
            "West Virginia",
            "Wisconsin",
            "Kentucky",
            "New Hampshire",
            "Oregon",
            "Alaska",
            "Connecticut",
            "Delaware",
            "Massachusetts",
            "New Jersey",
            "New York",
            "Rhode Island",
            "Vermont",
            "Hawaii"
        ]
    }
]
                                                                                                                                                                                                                    
                                                                                                    

Get usa states available - CODE SNIPPETS


curl --location --request POST 'https://zylalabs.com/api/9254/us+state+speed+limits+api/16720/get+usa+states+available' --header 'Authorization: Bearer YOUR_API_KEY' --header 'Content-Type: application/json' --data-raw '{}'


This endpoint provides comprehensive detailed speed limit data for a given state. To use it, you must indicate a US state as a parameter. You can get them from the first endpoint.


                                                                            
POST https://www.zylalabs.com/api/9254/us+state+speed+limits+api/16721/get+speed+limits+by+state
                                                                            
                                                                        

Test Endpoint

API EXAMPLE RESPONSE

       
                                                                                                        
                                                                                                                                                                                                                            [
    {
        "Kentucky": {
            "Rural Interstates": "65 (70 on specified segments)",
            "Urban Interstates": "65",
            "Limited Access Roads": "65",
            "Other Roads": "55"
        }
    }
]
                                                                                                                                                                                                                    
                                                                                                    

Get speed limits by state - CODE SNIPPETS


curl --location --request POST 'https://zylalabs.com/api/9254/us+state+speed+limits+api/16721/get+speed+limits+by+state' --header 'Authorization: Bearer YOUR_API_KEY' --header 'Content-Type: application/json' --data-raw '{"state":"Required"}'


API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the US State Speed Limits API simply include your bearer token in the Authorization header.
Headers
Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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US State Speed Limits API FAQs

The API provides maximum speed limits for urban roads, rural roads, limited access roads, and the highest legal speed in each U.S. state.

The API returns speed limit data in a structured format, typically JSON, which allows for easy integration and manipulation by developers.

Developers can use the API to build transportation apps, logistics management systems, or data visualization tools that require accurate speed limit information across different states.

The API supports parameterized queries, enabling users to request specific data without retrieving heavy data loads, thus improving performance and flexibility.

Users can expect fields such as state name, urban speed limit, rural speed limit, limited access road speed limit, and the highest legal speed limit for each state.

This endpoint returns a list of all U.S. states included in the speed limits dataset. The response is structured as a JSON array containing state names, allowing users to easily access and utilize the state data for further queries.

The response includes fields such as the state name and various speed limits categorized by road type, including "Rural Interstates," "Urban Interstates," "Limited Access Roads," and "Other Roads," providing detailed speed limit information for each state.

The response is structured as a JSON object where each state is a key, and its value is another object containing speed limit categories and their corresponding limits. This organization allows for straightforward access to specific speed limit data for each state.

Users must provide a specific U.S. state as a parameter to retrieve speed limit data. This parameter should match one of the states listed in the response from the "get usa states available" endpoint, ensuring accurate data retrieval.

Users can customize their requests by selecting specific states when querying speed limits. By specifying a state, users can obtain tailored speed limit information relevant to their needs, enhancing the API's usability for various applications.

This endpoint provides detailed speed limit information for a specified state, including maximum speed limits for rural interstates, urban interstates, limited access roads, and other roads, offering comprehensive insights into state-specific speed regulations.

The API sources its data from official state transportation departments, ensuring that the speed limit information is accurate and up-to-date. Regular updates and quality checks help maintain the integrity of the data provided.

Typical use cases include developing navigation apps, enhancing logistics software, and creating data visualization tools that require accurate speed limit information. This API supports applications that need to comply with transportation regulations or optimize travel routes.

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