ባቡሩ ከ60 ማይል በሰአት ፍጥነት የሚጓዝ ከሆነ፣የቅድሚያ ማስጠንቀቂያው ከ15 ሰከንድ ባነሰ ጊዜ ውስጥ ቢሆንም መሐንዲሶች ጥሩምባውን አያሰሙም።
"If a train is traveling faster than 60 mph, engineers will not sound the horn until it is within one-fourth mile of the crossing, even if the advance warning is less than 15 seconds.