Final answer:
Mopeds and some motor scooters are restricted from certain high-speed roadways due to their lower speeds, which could be hazardous on fast-moving roads.
Step-by-step explanation:
82. Mopeds and some motor scooters are restricted from certain high-speed roadways. This restriction is put in place because these vehicles typically have lower top speeds and may not be able to keep up with the faster-moving traffic on these roadways, potentially creating a safety hazard for both the riders and other motorists. Furthermore, because mopeds and motor scooters have lower power, they might struggle to maintain safe operation speeds required on highways or expressways.
For example, as in Figure 3.2, walkers and drivers must follow roads and sidewalks that can impose restrictions on the type of vehicles allowed based on their speed capabilities. In addition, zoning regulations and traffic control measures often reflect the need for ensuring safe and efficient traffic flow, which may include prohibitions on slower vehicles on fast-moving roads (rush hour traffic in Washington, D.C., as another instance).