Abstract: This vehicle of monocoque construction is formed by fastening together resin parts which are an upper body integrally made of a transparent thermoplastic resin composition, a lower body integrally made of a thermoplastic resin composition and a floor integrally made of a thermoplastic resin composition, wherein the vehicle is characterized in that the lower body is provided with a flange part rising up from the entire perimeter of the bottom surface and, in the center of the bottom surface, a convex rib part that continues rearward from the front of the vehicle, and the upper body and the floor being fastened to the flange part and the convex rib part of the lower body. In so doing, there can be provided a vehicle which is lightweight, affords a good field of view during driving, is simple in construction, and has the necessary rigidity.

Abstract: This vehicle of monocoque construction is formed by fastening together resin parts which are an upper body integrally made of a transparent thermoplastic resin composition, a lower body integrally made of a thermoplastic resin composition and a floor integrally made of a thermoplastic resin composition, wherein the vehicle is characterized in that the lower body is provided with a flange part rising up from the entire perimeter of the bottom surface and, in the center of the bottom surface, a convex rib part that continues rearward from the front of the vehicle, and the upper body and the floor being fastened to the flange part and the convex rib part of the lower body. In so doing, there can be provided a vehicle which is lightweight, affords a good field of view during driving, is simple in construction, and has the necessary rigidity.

Abstract: An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I): based on 100 parts by weight of polycarbonate resin. There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.

Abstract: An optical disk substrate and a light guide plate which are formed from a resin composition comprising 0.1 to 20 parts by weight of compound represented by the following formula (I): based on 100 parts by weight of polycarbonate resin. There can be provided an optical disk substrate formed from the resin composition of the present invention, particularly an optical disk substrate which allows the shape of a stamper to be transferred thereon with high precision and hardly undergoes warpage caused by environmental changes as a high density recording medium, and a light guide plate which has little uneven brightness and hardly undergoes warpage.