在英国，如果被认为粗心大意，在左侧超车可能会导致 100 英镑的罚款。 In the UK, undertaking—overtaking on the left—can lead to a £100 fine if deemed careless.

在英国，超车左侧速度较慢的司机，称为“承诺”，并不违法，但如果被认为粗心大意，可能会导致 100 英镑的罚款。 In the UK, overtaking slower drivers on the left, known as "undertaking," is not illegal but can lead to a £100 fine if deemed careless. 《公路法》建议反对这种做法,特别是在拥挤的交通中这样做,因为堵塞的交通可能带来危险。 The Highway Code advises against this practice, especially in congested traffic, where it can be hazardous. 负责驾驶的司机可能因驾驶不小心而受到惩罚,或者可以提供教育课程,而不是罚款。 Drivers who undertake may face penalties for careless driving or can be offered educational courses instead of fines.