Emirates reminds customers to arrive at the airport at least three hours before flight departure because of ongoing heavy road works, construction around the main airport highways and summer rush. Passengers can physically check in at the airport as early as six hours before departing on their flight. They are requested to check in no later than 90 minutes prior to departure and those who check in less than 60 minutes prior to departure will not be accepted for travel. Customers can also check in online on both their desktops and mobile devices from 48 hours to 90 minutes before flight departure or use the facilities near its car park area to check in and drop off luggage 24 hours to six hours prior to departure. Along with checked in baggage, passengers are strongly advised to adhere to carry-on baggage weight limits, which are 7kg for Economy Class and 14kg for Business and First Class. Alternatively, customers heading to Emirates Terminal 3 can choose to drop their luggage at one of the 46 dedicated bag drop counters. Passengers on US-bound flights starting their journeys in Dubai are encouraged to pack their electronic devices into their check-in luggage to avoid delays.