Vehicle with centralized laser beam source

A vehicle that is a leaning vehicle or a straddled vehicle having a plurality of wheels, the vehicle comprising:

• a vehicle body supporting the plurality of wheels, the vehicle body including a seat and a footrest part, the seat being configured to accommodate only one rider to sit thereon in a lateral direction of the vehicle, the footrest part being configured to allow the rider sitting on the seat to place his or her foot on the footrest part while driving the vehicle;
• one laser beam source unit disposed in the vehicle body, the laser beam source unit having
• one or more laser beam source elements each configured to generate a laser beam, and
• an output part shared by the one or more laser beam source elements for emitting the generated laser beam;
• a forward light-emitting part disposed further forward than the laser beam source unit in a front-back direction of the vehicle, the forward light-emitting part being configured to emit light from the laser beam supplied by the laser beam source unit;
• a rearward light-emitting part disposed further rearward than the laser beam source unit in the front-back direction of the vehicle, the rearward light-emitting part being configured to emit light from the laser beam supplied by the laser beam source unit;
• and
• a fiber optic cable extending from the laser beam source unit to both the forward light-emitting part and the rearward light-emitting part via a forward-rearward branch portion, to thereby allow the laser beam emitted from the laser beam source unit to be branched in the forward-rearward branch portion, and to then be supplied to both the forward light-emitting part and the rearward light-emitting part, wherein
• in a side view of the vehicle, a length of the fiber optic cable between the laser beam source unit and the forward-rearward branch portion is shorter than a sum of a length of the fiber optic cable between the forward-rearward branch portion and the forward light-emitting part and a length of the fiber optic cable between the forward-rearward branch portion and the rearward light-emitting part;
• the laser beam source unit further has a first directional end toward a first direction and a second directional end toward a second direction that is opposite to the first direction, the output part being at a position further in the first direction than the second directional end, the forward-rearward branch portion being at a position further in the first direction than the first directional end,
• the first direction and the second direction are in any of the front-back direction, a left-right direction, or an up-down direction of the vehicle;
• and
• at least a part of the laser beam source unit is positioned further upward than the footrest part in the side view of the vehicle, and positioned between a left end and a right end of the seat in a plan view of the vehicle.