Motorcycle dynamics held the last positions overall with the BMW leading the motorcycle group at 5:49.43 minutes. The Harley-Davidson models held a less than 2-second difference from each other with the FLHP Road King at 6:17.23 minutes and LHTP Electra Glide at 6:19.08 minutes.
See Table 1 on Page 49 for additional vehicle dynamic results.
The vehicle braking test's objective was to determine the deceleration rate attained by each test vehicle from 60 to 0 mph impending skid (threshold) stops, with the vehicle's anti-lock braking system (ABS) in operation, if the vehicle is equipped. Each vehicle was scored on the average deceleration rate it attained through 12 trials.
Each vehicle made two decelerations at specific predetermined points on the test road from 90 to 0 at 22 feet per sec.2, while using a decelerometer to maintain the target deceleration rate. Immediately after these "heat-up" stops were completed, the vehicle made six measured 60 to 0 mph impending skid (threshold) stops, again with ABS in operation, at specific predetermined points. Following a 4-minute heat soak, the entire sequence was repeated. The exact initial velocity at the beginning of each of the 60 to 0 mph decelerations and the exact distance required to make each stop was recorded by a Datron non-contact optical sensor with a personal computer. The resulting data calculated the average deceleration rate — the vehicle's score for the test.
In the general service group, the Dodge Magnum 3.5L stopped earliest at a project stopping distance (PSD) of 136 feet. Following directly behind is its counterpart 5.7L at a PSD of 141.1 feet. Creating Dodge's hat-trick for this category is the Charger 3.5L at a PSD of 142.1 feet. The Chevrolet Impala 9C1 3.9L took fourth at a PSD of 143.2 feet with the Ford Police Interceptor 3.27 4.6L at a PSD of 143.6 feet.
The Ford F-150 Super crew came out ahead in the Special Service group with a PSD of 147.3 feet. The Chevrolet Suburban 3/4 ton, Ford Explorer and Expedition all stopped within a single foot of each other at 156.4, 156.5 and 156.8 respectively.
The Harley-Davidson and BMW motorcycles, however, had a large difference between the two manufactures. The BMW R1200RTP took first place in the motorcycle group, but second overall, with a PSD of 139 feet. The Harley-Davidson Road King and Electra Glide, while not last overall, had a PSD of 171.4 and 173.3 respectively.
See Table 5 on Page 54 and Table 6 on Page 55 for additional vehicle braking results.
Acceleration and top speed
The vehicle acceleration test objective was to determine the ability of each test vehicle to accelerate from a standing start to 100 mph with data checkpoints at various speeds. The vehicle top speed test objective is to determine the actual top speed attainable within a distance of 14 miles from a standing start. After the fourth acceleration run, the vehicle continued to accelerate to the top speed attainable within the 14 miles provided at the DaimlerChrysler Proving Grounds.
Using the Datron optical sensor, each vehicle was driven through four acceleration sequences: two northbound and two southbound to allow for wind direction. The four resulting times for each target speed were averaged, with and reported.
Accelerating to every speed acceleration-mark quickest is the Dodge Charger 5.7L reaching 60 mph at 6.24 seconds and 100 mph at 15.29 seconds. The Charger 5.7L also took the top speed mark at a 148 mph — the exact top speed the Charger took the top speed category with in the 2007 testing. The Chevrolet Impala 9C1 3.9L and its E85 counterpart got to 60 mph in a 0.04 second difference and 100 mph in a 0.07 second difference with top speeds of 142 and 141 mph respectively. With a considerable top speed drop to 132 mph in the fourth and fifth positions, the Dodge Charger 3.5L and Magnum 3.5L kept a close acceleration pace with each other throughout. Here the Charger met 60 mph at 8.68 seconds with the Magnum at 8.81. However, their difference grew slightly as the speed increased — the Charger reaching 100 mph in 23.15 seconds and the Magnum in 23.96. The remaining top speeds of the general service vehicles ranged from 131 to 120 mph.