The highway department is interested in finding out how the accident rates may be con- nected to certain design features of the highways. A few factors are under the control of the department, others are not or would require a major reconstruction of the highway. Nevertheless, these other factors are important determinants of accidents.

-Motivate the choice of your variables.

• Length of Highway:
• Traffic signals
• Speed Limit:
• Total Number of Lanes
• Number of Access Points per Mile
• Number of Freeway-Type Interchanges per Mile
• Average Daily Traffic Count in Thousands
• Truck Volume as a Percent of the Total Volume