You have just graduated from the police academy, and now you are patrolling under the supervision of a field-training officer. Together you pull over a motorist for a minor traffic violation. Your field-training officer orders you to search the woman's car. Based on what you have learned in the academy, you believe that under these circumstance, a search of her car would be unethical and illegal.

Answer the questions below based on the information in the following passage.

The use of a roadblock is simply an adaptation of the military practice of encirclement by the police. Successful operation of a roadblock plan depends almost entirely on the amount of advance study and planning given to such operations. A thorough and detailed examination of the roads and terrain under the jurisdiction of a given police agency should be made with the locations of the road blocks pinpointed in advance. The first principle to be borne in mind in the location of each roadblock is the tie element. Its location must be at a point beyond which the fugitive could not have possibly traveled in the time elapsed from the commission of the crime to the arrival of the officers at the roadblock.