About 3,000 police officers will be deployed tomorrow to cope with crowds of more than 300,000 expected for the National Day fireworks display. People have been urged to use public transport instead of driving to Tsim Sha Tsui, Wan Chai and Central where road closures will start at 7.30pm. In Wan Chai, unauthorised vehicles will be barred from areas around the Hong Kong Convention and Exhibition Centre for a flag-raising ceremony and reception at 8am and 4.30pm respectively. A section of Salisbury Road may be cordoned off because of construction work. 'The number of people allowed into the area will be reduced because of road works there,' Senior Superintendent Leung Fui, divisional commander of Tsim Sha Tsui, said yesterday. Police estimated more than 300,000 people will flock to the waterfront areas for the firework show, which starts at 9pm. Roads will be reopened about 1.5 hours after the display. Public transport will be boosted with more MTR trains running between 7pm and 9.30pm. Roads will be closed in Tsim Sha Tsui on Friday from about 10.30am for the Yau Tsim Mong Grand Parade. About 600 officers will be deployed for the event, which will run from 11am to 1.30pm.