Several years ago when Krit was just 16, this picture was very different.
His customers were still Western tourists, but they went to him for sex, not tuk-tuk rides.
When she returned to her life in Washington DC, she couldn't stop thinking about what she'd witnessed.
"I sold my wedding ring and used that money to get back to Thailand and rent a little space in the red light district."Urban Light staff hand out condoms and fliers in bars and brothels in touristy areas of the city that seem innocuous enough, but are notorious spots for Western men (and increasingly Chinese and Thai men, Russell says) to find children for sale.
I feel lucky to be alive."Now Krit is teaching other teen boys - also sex-trafficking victims - to drive the noisy three-wheel taxis.