Keyphrases
Law
100%
Use Rate
100%
Helmet Use
100%
Motorcycle Helmet Use
100%
Motorcyclist
44%
Helmet Law
33%
Michigan
22%
Environmental Characteristics
22%
Motorcycle
22%
United States
11%
No Significant Difference
11%
Logistic Regression Model
11%
Short-term Change
11%
Modeling Framework
11%
Public Awareness
11%
Vehicle Type
11%
Educational Awareness
11%
Legislative Changes
11%
High Visibility
11%
National Estimates
11%
Observational Survey
11%
Random Parameters
11%
Fatal Injuries
11%
Serious Injury
11%
Crash Helmets
11%
Motorcycle Helmet Law
11%
Occupant Protection
11%
Roadway Characteristics
11%
Traffic Fatalities
11%
Traffic Injury
11%
Motorcycle Rider
11%
Unobserved Heterogeneity
11%
Seat Belt
11%
Unobserved Factors
11%
Restraint Use
11%
Use Trends
11%
Social Sciences
Helmet Use
100%
Motorcycle
100%
Occupational Protection
10%
Engineering
Motorcyclist
100%
Direct Observation
25%
Target Area
25%
Seat Belt
25%