Vehicle component for a vehicle, in particular a rail vehicle for high speed traffic, comprising: - a first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1) and - a second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2), wherein - said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), in a first operating mode of said vehicle with a first travel direction, is exposed to a relative wind induced air flow having a local main flow direction (111; 211; 311; 411; 511), - said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), in the region of a recess (106; 206; 306; 406; 506) at said vehicle, forms a flow separation edge (107; 207; 307; 407; 507) at which said air flow, at a nominal operating speed of said vehicle, separates from said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), - said recess (106; 206; 306; 406; 506) is confined by a first wall (106.1) leading in said local main flow direction (111; 211; 311; 411; 511) and a trailing second wall (106.2), - said flow separation edge (107; 207; 307; 407; 507) extends at least over a majority of a transverse dimension of said recess (106; 206; 306; 406; 506) transverse to said local main flow direction (111; 211; 311; 411; 511), - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2), in said local main flow direction (111; 211; 311; 411; 511), is located adjacent to said flow separation edge (107; 207; 307; 407; 507), and - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) forms at least a part of said first wall (106.1), and - a third surface (109.3; 209.3; 309.3; 409.3; 509.3), in said local main flow direction, is located adjacent to said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) characterised in that - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) is arranged to be inclined in the manner of a chamfer about an acute angle of inclination of 10° to 60° relative to said local main flow direction (111; 211; 311; 411; 511) and - said third surface (209.3; 309.3; 409.3; 509.3) is arranged at a stronger inclination relative to said local main flow direction (111; 211; 311; 411; 511) than said second surface (209.2; 309.2; 409.2; 509.2). - a first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1) and - a second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2), wherein - said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), in a first operating mode of said vehicle with a first travel direction, is exposed to a relative wind induced air flow having a local main flow direction (111; 211; 311; 411; 511), - said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), in the region of a recess (106; 206; 306; 406; 506) at said vehicle, forms a flow separation edge (107; 207; 307; 407; 507) at which said air flow, at a nominal operating speed of said vehicle, separates from said first surface (109.1; 103.3; 209.1; 309.1; 409.1; 509.1), - said recess (106; 206; 306; 406; 506) is confined by a first wall (106.1) leading in said local main flow direction (111; 211; 311; 411; 511) and a trailing second wall (106.2), - said flow separation edge (107; 207; 307; 407; 507) extends at least over a majority of a transverse dimension of said recess (106; 206; 306; 406; 506) transverse to said local main flow direction (111; 211; 311; 411; 511), - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2), in said local main flow direction (111; 211; 311; 411; 511), is located adjacent to said flow separation edge (107; 207; 307; 407; 507), and - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) forms at least a part of said first wall (106.1), and - a third surface (109.3; 209.3; 309.3; 409.3; 509.3), in said local main flow direction, is located adjacent to said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) - said second surface (109.2; 103.5; 209.2; 309.2; 409.2; 509.2) is arranged to be inclined in the manner of a chamfer about an acute angle of inclination of 10° to 60° relative to said local main flow direction (111; 211; 311; 411; 511) and - said third surface (209.3; 309.3; 409.3; 509.3) is arranged at a stronger inclination relative to said local main flow direction (111; 211; 311; 411; 511) than said second surface (209.2; 309.2; 409.2; 509.2).