Vuong Thinh is seeking clarification on motorcycle parking regulations, specifically regarding the required distance from the curb. He notes that many motorcyclists have recently been fined for parking on roads and sidewalks. His primary question is whether motorcycles, when parked in designated areas, must position their wheels no more than 25 cm from the curb, a rule that applies to cars. If this rule applies to motorcycles, Vuong Thinh also asks whether the 25 cm measurement should be taken horizontally (with two wheels parallel to the curb) or vertically (with the front wheel perpendicular to the curb).