<P> These signs are used to warn of level crossings ahead . In most countries , a red triangle warning sign is used , with various pictograms for unguarded crossings , crossings with manual gates , and automatic level crossings . In most of Europe , an old - style gate is used for a crossing with gates , and a steam locomotive for a crossing without gates . Germany uses an electric train . Similar pictograms are also used in Ireland , albeit on an amber diamond sign . In the United States the warning of all types of railway crossings is made using a circular yellow sign . The actual crossing is also marked with crossed `` railroad crossing '' crossbuck signs ( stop , look , listen ) and possibly lights , bells , and barriers . </P>
<P> These signs are used to warn of level crossings ahead . In most countries , a red triangle warning sign is used , with various pictograms for unguarded crossings , crossings with manual gates , and automatic level crossings . In most of Europe , an old - style gate is used for a crossing with gates , and a steam locomotive for a crossing without gates . Germany uses an electric train . Similar pictograms are also used in Ireland , albeit on an amber diamond sign . In the United States the warning of all types of railway crossings is made using a circular yellow sign . The actual crossing is also marked with crossed `` railroad crossing '' crossbuck signs ( stop , look , listen ) and possibly lights , bells , and barriers . </P>
the sign marked in this triangle in red colour
the sign marked in this triangle in red colour
to warn of level crossings ahead
to warn of level crossings ahead