Narrow alleys in subway construction (approximately 2.8 meters wide), logs (30 cm in diameter), log grab attachments, and a remote-controlled skid-steer loader (2.4G wireless remote control).Scenario Description: Logs (for structural support) need to be transported in a narrow alley (approximately 2.8 meters wide) next to a subway tunnel. Conventional loaders are too wide to enter, but a remote-controlled skid-steer loader (1.8 meters wide) can easily turn around. Equipped with a log grab attachment (1.2 tons of gripping force), the operator can remotely control the logs from a safe location at the alley entrance and stably lift them to the construction site. This solves the pain points of dangerous and inefficient narrow alley operations, making it a "safe transport tool" for infrastructure construction sites.