Does the speed limit defined by this sign apply only to the nearest junction or rail intersection provided other signs do not instruct otherwise?

The visible A-14 'Road works' warning sign, with the T-1a supplementary plate placed beneath it, specifies the maximum permitted speed for the section where the indicated hazard is present. According to the general rules for cancelling restrictions, such a temporary speed restriction remains in force up to the next junction, unless it is cancelled earlier by another sign.