NHSA Module 5 Practice Test

Regulatory signs convey legal requirements you must follow on the road. They establish rules that govern driving behavior, such as speed limits and which turns are allowed or prohibited. Following these is not optional—disobeying them can result in penalties and affect safety and traffic flow. In contrast, warning signs alert you to hazards ahead; informational signs guide you with directions, services, or destinations; construction signs warn of work zones and may indicate detours. Therefore, the category that communicates legal requirements like speed limits and turning restrictions is regulatory signs.