It claimed the failure of a railway crossing barrier on Springbank West earlier had contributed to the delays.
The crossing is an automated half-barrier crossing, the spokesman said.
BBC: Train hits car on Great Coates level crossing killing two
The crash happened at about 19:40 BST at the automated half-barrier crossing on Woad Lane in Great Coates, North East Lincolnshire.
BBC: Great Coates level crossing deaths: Families pay tribute
This, some scientists believe, leads to new illnesses formed by genetic mutation crossing the species barrier and entering the human population.
This, some scientists believe, leads to new diseases formed by genetic mutation crossing the species barrier and entering the human population.
The 47-year-old car driver, from Grimsby, was confirmed dead at the scene of the automated half-barrier crossing on Woad Lane, while the other, a 40-year-old man from Cleethorpes, died on the way to hospital, BTP said.
The report by the Rail Accident Investigation Branch (RAIB) found engineering work on the line between Southcote Junction in Reading and Westbury meant the automatic half barrier level crossing was being controlled locally.
But the barrier is studded with crossing points which may yet draw bigger crowds of Palestinian demonstrators.
At night a vast yellow barrier descends on the crossing, trapping latecomers inside.
After the crash Network Rail said there had been a problem at the crossing a year ago, with the barrier rising and falling slowly, but it had been fixed and it was in full working order.
Network Rail said there had been a problem at the crossing a year ago, with the barrier rising and falling slowly, but it had been fixed and it was in full working order before the crash.
BBC: Man dies after car hit by train at Yarnton level crossing
The crossing is described as an "automatic half-barrier" type and the lowering of the barriers is preceded by flashing signals.
One - upgrading the crossing so that it has a locally monitored automatic barrier - has already been investigated by Network Rail.
Dharmesh Patel noticed on CCTV that a van had "zipped" under a level crossing gate but could not get through the next barrier as a train approached.
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