Modified pickup trucks known as songthaews serve as the primary public transit system across provincial Thailand. The word translates literally to "two rows" in the Thai language. These vehicles fill a crucial transit gap between expensive private taxis and fixed city bus networks.
The name comes directly from the physical layout of the passenger compartment. Two long wooden or metal benches are fixed along each side of the modified pickup truck bed. In some vehicles, a third bench is added down the middle of the seating area to accommodate more passengers.
Millions of local residents and budget travelers rely on these open-air trucks for affordable daily travel. They offer an authentic glimpse into everyday Thai life as they move slow enough for passengers to take in the roadside sights. A metal roof covers the rear seating area, with plastic curtains often attached to the sides to block out sudden rain.
Color Codes and Regional Varieties
Operators in different cities use distinct color codes to manage their local transit networks. In northern Chiang Mai, the dominant city trucks are painted bright scarlet and are called "Rot Daeng". These red trucks operate like shared taxis, while other colors connect travelers to rural districts.
Coastal Pattaya operates dark blue vehicles that continuously loop along the main beach roads. Meanwhile, Phuket uses large blue wooden trucks known as "Po Thong" to carry commuters from town to the western beaches. Hua Hin operates a disciplined system with green trucks for the airport, white trucks for bypass roads, and red trucks for residential neighborhoods.
These modern passenger vehicles have evolved from very humble historical beginnings. The earliest versions in the 1950s were converted from Austin A30 sedans before operators transitioned to British cargo models. Today, operators typically convert sturdy modern pickup trucks like the Isuzu Faster or Toyota Hilux.
Smaller, uniquely shaped versions also operate in certain areas of the country. These compact vehicles are affectionately called "rot ka-poh" or toad cars due to their distinctive shape. Others are referred to as "rot-Subaru" or "rot kra-pong," which means tincan cars.
The Unspoken Rules
Riding a songthaew involves following a simple, unspoken etiquette that locals understand naturally. To flag down a moving truck, passengers simply extend an arm downward with the palm facing the road. Waving wildly in the air or shouting at the driver is generally discouraged.
Once inside, riders slide forward toward the cab to keep the entrance clear for others. To stop the vehicle, passengers press one of the electric buzzer buttons fixed to the roof. If a buzzer is missing, a firm tap on the back of the cab window signals the driver to pull over.
In Pattaya, the famous "baht bus" fare system recently underwent its first major change in over thirty years. On April 10, 2026, the old flat rate of 10 baht was officially raised to 15 baht due to rising fuel costs. Most standard city routes now charge 15 baht, while long-distance trips step up to 20 baht.
Experienced riders avoid asking the driver for the price before boarding on standard routes. Inquiring about the fare signals inexperience, which can prompt drivers to charge a much higher private charter rate. It is best to simply step off at the destination and pay the standard rate at the front window.
Green Upgrades and Clean Energy Fleets
Traditional songthaews run on diesel engines, which contribute heavily to urban air pollution and greenhouse gases. To combat this environmental issue, exciting clean energy projects are beginning to electrify public fleets in Chiang Mai. Thailand's very first fully electric public transport vehicle retrofit was validated and put into service there.
Converting these heavy-use diesel trucks to battery power reduces energy consumption by an impressive 72 percent. It also cuts lifecycle carbon emissions by 45 percent compared to conventional diesel vehicles. This green transition supports Thailand's national goal of achieving carbon neutrality.
From a financial perspective, retrofitted electric vehicles are highly cost-effective over a ten-year lifespan. Legacies converted to battery electric power reduce total ownership costs by about 13 percent compared to diesel trucks. However, factory-built electric trucks face higher initial costs and steeper depreciation barriers.
