Table of Contents
              
              Legislation and Licensing
| 
 Countermeasure  | 
 Effectiveness  | 
 Cost  | 
 Use  | 
 Time  | 
| 
 Lower Speed Limits  | 
 | 
 $  | 
 High  | 
 Varies  | 
| 
 Variable Speed Limits  | 
 | 
 $$$  | 
 Medium  | 
 Varies  | 
| 
 Increasing Penalties  | 
 | 
 Varies  | 
 High  | 
 Varies  |