This sign warns that locomotives must not drive past a specific spot. It is usually used with other warning signs, like the "Proceeding Beyond This Point Prohibited" sign, to increase safety. Goal and Guidelines: The Locomotives Prohibited Beyond This Point sign is intended to avert mishaps and guarantee the security of personnel and machinery. It conforms with the Occupational Health and Safety Act rules imposed in South Africa. The sign is available in both standard and reflective versions.