Littlehaven (in Horsham) crossing used to be notorious for long waits and queues of traffic. The problem is the crossing is adjacent to the station, so the barriers go down for any train coming from Horsham and stopping at Littlehaven, so people have to wait for the train to stop, load/unload, then move off past the crossing. Before the platform was extended, trains coming from Crawley that stopped at Littlehaven straddled the crossing if they were more than four coaches in length, which again, meant having to wait for the train to stop, load/unload and depart and clear the crossing. Sometimes, the time taken to wait for these stopping trains to move off is just long enough that another train coming from Crawley or Horsham triggers the barriers to stay down. At its worst, you could wait for three trains, at least one of which would go through the stop-unload/load-depart procedure, which resulted in waiting times over 12 minutes. Now the platform has been extended to cater for 12 coach trains this has, I believe, eliminated the worst of the waiting times.