The USA State Speed Limits Info 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.
[
{
"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"
]
}
]
curl --location --request POST 'https://zylalabs.com/api/9430/usa+state+speed+limits+info+api/17172/get+usa+states+available' --header 'Authorization: Bearer YOUR_API_KEY' --header 'Content-Type: application/json' --data-raw '{}'
[
{
"Kentucky": {
"Rural Interstates": "65 (70 on specified segments)",
"Urban Interstates": "65",
"Limited Access Roads": "65",
"Other Roads": "55"
}
}
]
curl --location --request POST 'https://zylalabs.com/api/9430/usa+state+speed+limits+info+api/17175/get+speed+limits+by+state' --header 'Authorization: Bearer YOUR_API_KEY' --header 'Content-Type: application/json' --data-raw '{"state":"Required"}'
| Header | Description |
|---|---|
Authorization
|
[Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed. |
No long-term commitment. Upgrade, downgrade, or cancel anytime. Free Trial includes up to 50 requests.
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.
To obtain your API key, you first need to sign in to your account and subscribe to the API you want to use. Once subscribed, go to your Profile, open the Subscription section, and select the specific API. Your API key will be available there and can be used to authenticate your requests.
You can’t switch APIs during the free trial. If you subscribe to a different API, your trial will end and the new subscription will start as a paid plan.
If you don’t cancel before the 7th day, your free trial will end automatically and your subscription will switch to a paid plan under the same plan you originally subscribed to, meaning you will be charged and gain access to the API calls included in that plan.
The free trial ends when you reach 50 API requests or after 7 days, whichever comes first.
No, the free trial is available only once, so we recommend using it on the API that interests you the most. Most of our APIs offer a free trial, but some may not include this option.
Yes, we offer a 7-day free trial that allows you to make up to 50 API calls at no cost, so you can test our APIs without any commitment.
Zyla API Hub is like a big store for APIs, where you can find thousands of them all in one place. We also offer dedicated support and real-time monitoring of all APIs. Once you sign up, you can pick and choose which APIs you want to use. Just remember, each API needs its own subscription. But if you subscribe to multiple ones, you'll use the same key for all of them, making things easier for you.
Service Level:
100%
Response Time:
7,909ms
Service Level:
100%
Response Time:
5,620ms
Service Level:
100%
Response Time:
55ms
Service Level:
100%
Response Time:
55ms
Service Level:
100%
Response Time:
55ms
Service Level:
100%
Response Time:
55ms
Service Level:
100%
Response Time:
12,487ms
Service Level:
100%
Response Time:
309ms
Service Level:
100%
Response Time:
3,862ms
Service Level:
100%
Response Time:
128ms
Service Level:
100%
Response Time:
1,398ms
Service Level:
100%
Response Time:
1,007ms
Service Level:
100%
Response Time:
206ms
Service Level:
100%
Response Time:
12,176ms
Service Level:
100%
Response Time:
5,238ms
Service Level:
100%
Response Time:
2,296ms
Service Level:
100%
Response Time:
1,103ms
Service Level:
100%
Response Time:
3,413ms
Service Level:
100%
Response Time:
364ms
Service Level:
100%
Response Time:
2,879ms