Addictive little game, but needs bug fixes – Gridlocked: Traffic Control Review

Really like this game. Simple and addictive. Unfortunately, I keep encountering random mid-play crashes on iPhone 4 running iOS 4.1. I'm also lacking the gate open/close sound effect roughly half of the time; hard-closing and reopening the app usually fixes this for awhile. Would also love a bit more clarity as to what causes the vehicles to crash other than obvious visible collisions. When I queue up a long stream of cars at a gate then let them go at once, they often crash even though there was nothing in front of them to hit. Update: Apparently the sudden uncontrollable collisions in Roundabout mode are intentional ... but horribly annoying! Please ditch!
Review by billwest33 on Gridlocked: Traffic Control.