Metropolitan Police said yesterday that for freer traffic, such vehicles would not be allowed to enter Khao San Road from 9am12pm and Silom Road between the Sala Daeng and Nararom intersections from 8am8pm.
These roads will be turned into mostly walking streets from today to Monday.
Parts of Chokchai 4 Road will also bar water trucks from 11am10pm, while Thavee Wattana Road from the Thavee Wattana checkpoint to the Sanam Luang Thon Buri Market Intersection will be off limits to water trucks from 10am8pm.
The 15 roads where water trucks are banned all the time include Rajdamnoen Noi, Rajdamnoen Klang, Rajdamnoen Nok, Na Phra Lan, Na Phrathat, Uthong Nai, inbound Somder Phra Pinklao between the Arun Amarin and Pan Pipop Leela Bridge intersections, and Arun Amarin between the Arun Amarin Intersection and Rama VIII Bridge.
The five roads where the ban is in effect only from noon to midnight include Samsen Nai between the Si Sao Thewet and Bang Lamphu intersections, Phra Sumen between Phra Sumen Fortress and the Wan Chat Intersection, Phra Arthit between Somdet Phra Pinklao Bridge and Phra Sumen Fortress, Tanao between the Chao Phor Seu Shrine Intersection and the Sib Sam Hang roundabout, and Sib Sam Hang.
For details about routes and to report traffic problems, call the 1197 hotline or visit www.trafficpolice.go.th.