What are the characteristics of limited-access highways?

• Stop signs, traffic lights, and railroad crossings are commonly found.
• Single-lane roads with various stops and traffic signals.
• Multiple-lane roads without stop signs, traffic lights, or railroad crossings.
  Explanation:

  "Limited-access highways, also called expressways, interstate highways, turnpikes, toll roads, and freeways, are multiple-lane roads with no stop signs, traffic lights, or railroad crossings."
• Exclusively toll-free roads with minimal lanes.