|  |  | | The rising lower edge of the side windows is complemented by the gradually falling roof line to give a 'hint' of coupe-like styling. The small quarterlight ahead of the front side window, and a further side window behind the C-pillar, in addition to the large-sized front windscreen, add to Jazz's excellent all-round visibility. At the rear a crease line running across the width of the tailgate at taillight level adds further distinction.
Rigidity gets a boost
Extensive use has been made of computer simulations for more efficient and cost-effective development of the body. As well as lessening development time, these techniques have allowed the engineers to minimise weight and determine the optimum materials while improving the overall design. One of the benefits to emerge from this process is a significant improvement in body rigidity. Both bending and torsional rigidity are increased significantly over that of the previous Honda model in this class, delivering improved impact resistance, reduced interior noise, as well as enhanced handling and ride since the suspension mounting points always remain in correct alignment.
Significant areas of additional stiffening include across the width of the front panel, the dash lower panel, the C-pillar and around the tailgate opening.
Arch-type side frame delivers outstanding frontal impact safety
Dealing with the energy involved in a frontal impact is made all the more difficult by the reduced dimensions of a small car. Managing that energy in the 'short-nose' design of the Jazz presented an even tougher challenge. However, by using its experience in the larger Civic and employing its "G-control" technology, Honda has achieved best-in-class levels of safety and is confident that the Jazz will achieve a four star rating in the Euro NCAP front and side impact tests.
Key to Honda Jazz's performance in frontal crash tests is the front 'arch-type' side frame. This smoothly curved chassis member absorbs substantial energy in its own right through progressive deformation, but its design is such that it directs the impact energy down and beneath the cabin, so minimising intrusion into the critical passenger safety cell.
These side frames work in conjunction with the immensely strong floor structure that is created by the cross members and longitudinal members surrounding and protecting the central fuel tank on all four sides. The 'cross-floor', tunnel-like structure that results from this perimeter frame provides exceptional floor stiffness. This also benefits side impact performance in which centre pillar reinforcement works together with floor cross member stiffness for outstanding performance in maintaining cabin integrity.
Leading pedestrian safety features in true Honda fashion
Honda continues to conduct extensive research into pedestrian safety centred on its Active Safety Vehicle, the ASV3, together with sophisticated pedestrian dummies, road accident analysis and computer-assisted accident simulation. The effectiveness of that programme was recently demonstrated by the Civic 5 door which recorded the highest ever rating in the Euro NCAP tests for pedestrian protection. Honda expects a similar three star rating for Jazz.
Specific items on the new Honda Jazz include:
- an unobstructed area beneath the bonnet allowing it to deform on impact - bonnet hinges, front wing mounting brackets and radiator top brackets that compress under impact - energy-absorbing front bumper beam - energy-absorbing sliding wiper pivots
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