A parade float representing the Northeast. (Photo supplied)

Bangkok motorists are advised to avoid Rama I and Ratchadamri roads on Wednesday evening, when a tourism promotion procession will make its way from Pathumwan intersection to Lumpini Park.

The outbound lane of Rama I road (next to Siam Discovery) from Pathumwan intersection to Chaloem Phao Junction will be close from 5pm to 9pm. The procession will go along Rama 1 Road and turn right at Ratchaprasong intersection, then along Ratchadamri Road to Lumpini Park.

A signpost near Khlong Toey market on Rama IV Road advises motorists to avoid some intersections in Bangkok during the tourism promotion procession on Wednesday. (Photo by Nittaya Nattayai)

Pol Maj Gen Jirapat Phumjit, deputy chief of the Metropolitan Police Bureau (MPB) who oversees traffic in the city, said motorists from Charoen Phon intersection heading to Pathumwan intersection on Rama I will be forced to either turn left to Phaya Thai Road or right to Sam Yan area during this time.

Motorists from Phloenchit can go through the inbound lane of Rama 1 road, he said. After the procession moves to Ratchadamri road, it will occupy only the far left lane of the road. Other lanes can be used by motorists.

The MPB,wants drivers to avoid the route to ease traffic problems. Spectators are advised to use t public transport to attend the event.

Traffic information is available at hotline 1197 of the Traffic Control and Command Centre, Pol Maj Gen Jirapat said.

The procession marks the government’s “Amazing Thailand Tourism Year 2018” campaign, which runs from Nov 1 to Jan 1, 2019.

The procession is in six parts -- the symbol of “Amazing Thailand Tourism Year 2018”, traditions from the five regions of Thailand, Thai gastronomy, colourful festivals, sport tourism and good hosts.