Network Rail is making crucial changes at three level crossings in Pembrokeshire later this month to improve safety for the community and holidaymakers.

The changes, which will see trains slowing down instead of stopping to avoid confusion, will affect three crossings without barriers on the Pembroke Dock branch line:

• Beavers Hill open crossing at Manorbier, between Manorbier and Lamphey stations

• Manorbier Newton open crossing at Manorbier, between Manorbier and Lamphey stations

• Llanion open crossing near Pembroke Dock station

Trains are currently required to stop on their approach to the crossings, with the driver sounding a horn before proceeding.

From March 31, trains will instead approach at a constant speed of 5mph, with the driver sounding the horn as a warning before continuing over the crossing if it is safe to do so.

Crossing users should continue to follow the safety advice:

• Do not attempt to cross if a train is approaching ­– or is already on – the crossing

• Crossing users must give way to any visible trains as they have right of way

• If driving a road vehicle, drive to the conditions of the road and control your speed so you can stop in plenty of time if you need to

• Always obey the level crossing safety signs and remain vigilant before and during your use of the level crossing

Daniel Jones level crossing manager for the Whitland region said: “We have identified that the existing practice has resulted in confusion for crossing users.

“Users often assume because the train has stopped and the driver has sounded the horn, that this is an indication for them to cross when it is, in fact, intended as a warning. This has resulted in several close calls between trains and road users.

Nick Millington route director said: “These operational changes at three level crossings in Pembrokeshire are being made to improve both safety and train performance.

“Ahead of the holiday season, when these crossings are at their busiest, we are not asking people to do anything differently when using them but to continue to obey the safety signs and remain vigilant.”