Motorbike taxis are everywhere in bangkok and honestly way faster than sitting in traffic. Fair prices are ฿20-40 for short distances (under 1km), ฿50-80 for medium trips. Always negotiate before getting on. The driver provides the helmet by law now - don't bring your own, theirs are required to be sterile. Hold onto the back rail, not the driver. If you're carrying a bag, keep it in front of you. They're surprisingly safe if you pick drivers at established stands vs random street flagging