erie, Pennsylvania - AUGUST 1, 2014-- It’s the longest interstate in the country and the Pennsylvania State Police is doing its part to keep people safe while traveling on I-90. Fifteen states are taking part in this push to reduce the number of motor vehicle crashes on the interstate. Officials say this coming weekend is a big travel weekend for those going on a summer vacation and hope extra law enforcement officials in the field, on the countries busiest highways, will help drivers stay safe. The challenge runs through Monday and the police hope the additional enforcement for the four days will help the department reach its goal of zero fatalities during the time period and is aiming to reduce crashes in half. The State Police say they will be looking for distracted drivers including people who are speeding, drinking and driving, or anything that can distract from your driving and can cause a crash.