At 3:15 pm Monday a contract street sweeper was working on the inside shoulder of I-69 Southbound just south of FM 1314. Behind it was a bumper crash truck. A 69-year-old male was traveling in the left lane in a Toyota Tundra when he struck the rear of the crash truck, rolled over, and struck the sweeper. The driver of the Tundra was in critical condition and was transported to kingwood where he was pronounced deceased. As traffic slowed for the crash a second crash occurred about 200-yards behind the first. That crash involved a seven-vehicle. Multiple ambulances were requested to the scene and several patients were transported. With over 150-gallons of diesel leaking onto the freeway Woodlands Haz-Mat was dispatched to the scene as was Masters Hazmat. The freeway was closed for several hours as DPS investigated the crashes and the road was cleared. Increasing the distance between you and the car ahead can help give you the time you need to recognize a hazard and respond safely. The National Safety Council recommends a minimum three-second following distance. Determining the three-second gap is relatively easy or one car length for every 10 miles per hour.