Now Dubai is a Host for World Expo 2020.. So what are the developments or changes has to be expected to come in Dubai before the year 2020 ?

I think it should empower the local economy.

for example, dubai will experience a higher volume of traffic so more developments on infrstructure and transportation should take place. also developing the industry of advertising seems like a good idea. 

By taking the survey of UAE residents what changes they want before opening the World Expo 2020 according to that tey need to take the changes in it 

The era of globalization can not be separated from information disclosure positive for the promotion and development of the territory of the city , but it should remain an efficient regulation time and cost effective so that investors remain logged in. Developments should continue to grow , it takes a professionals, reliable and sonsisten to progress .