Which system is utilized primarily for non-emergency assistance regarding traffic and travel conditions?

The system primarily utilized for non-emergency assistance regarding traffic and travel conditions is 511. This travel information hotline provides callers with updates and information on road conditions, traffic delays, construction, and other travel-related inquiries. It is specifically designed to assist the public in making informed travel decisions without creating an emergency situation. The use of 511 is coordinated at the state and sometimes local levels, and it enhances travel safety and efficiency by providing timely information.

In contrast, 911 is designated for emergency situations requiring immediate response from law enforcement, fire, or medical services. 411 is typically used for directory assistance, helping individuals find phone numbers or addresses. Meanwhile, 811 is a hotline for locating underground utilities prior to excavating, ensuring safety and preventing damage to essential services. Each of these systems serves a distinct purpose, but 511 is the one focused on traffic and travel, making it the correct answer.