human 40 Traffic congestion 34 female 26 Humans 25 Vehicles 25 male 25 Article 23 traffic accident 23 adult 22 Roads and streets 19 Motor transportation 16 Air traffic control 14 Traffic signals 14 article 14 traffic and transport 14 Female 13 Intelligent systems 13 Transportation (General works). Communication and traffic 13 aged 13 Malaysia 12 Male 12 Street traffic control 12 Traffic control 11 Accidents 10 Forecasting 10 Traffic flow 10 Travel time 10 controlled study 10 Accidents, Traffic 9 Aged 9