Complex sentence: In summer, drivers would follow the dust cloud of the vehicle in front (which could last a couple of miles) as a way to find the road, but sometimes they would end up crashing into the vehicle in front.
Split into simpler sentences: In summer, drivers would follow the dust cloud of the vehicle in front (which could last a couple of miles) as a way to find the road. Sometimes they would end up crashing into the vehicle in front.