遊花園遊去邊？ 叫你講人地份 background 就講埋人地提出嘅 research gap 點解變咗討論 introduction 有無用？
調返轉就係人地寫文睇完覺得有不足先提出 research gap 㗎嘛，咁你引用得嘅，攞埋出嚟公論好合理掛 最後又走去講人地份全新 research 穩唔穩妥？
從來都係講緊 background 同一段最後嗰兩句探討緊嘅 research gap
唔知你扯去其他 research gap 做乜鬼
#503 都明確引埋我講緊邊個 research gap, 以下邊度有提過 pedestrians and cyclists?
These studies aggregated data for entire countries or groups of countries and therefore cannot describe the potential spatial variation across regions and contexts (e.g., urban versus rural). Furthermore, at the country level, no distinction is usually made between different types of busses (e.g., school bus, intercity, urban transit) [3, 6, 8], except for one study which only looked at fatality rates [9].
Effect of Speed on Crash Severity
There is clear and convincing evidence that crash severity increases with individual vehicle speed. This finding is supported by theory and statistical analysis.
(雖然佢 statistical anlaysis 睇 pedestrian injuries 可以挑剔下嘅)
A total of 1,618 light vehicle impacts were analysed using logistic regression. Individual risk curves were produced for front, head on, side, rear and single vehicle impacts. The analysis found significant positive relationships between the risk of serious injury and travel speed for all of these impact types.
