transportation accidents traffic safety 63 road transport 22 air transport 18 injuries 15 cars 11 simulation and modelling 11 more ... biomechanics 9 railway transport 9 automobile electronics 8 history 8 traffic 7 tests 7 integrated rescue service 6 investigation 6 transport means driving 6 transport 5 motorcycles 5 personal cars 5 railway crossings 5 roads 5 telecommunications 5 testing line 5 analysis 4 children 4 aircraft construction 4 aircrafts 4 mathematical models 4 accident rate 4 accidents 4 less ...