我是否正确地使用了这个交易?

我阅读了VehicleMovementEvent对象的列表，其中大多数是停车场区域的普通入口和出口。这些都有入口或出口的指示，以及日期和时间。我使用这个列表来生成一个VehiclePresence对象列表，它告诉我从开始时间到结束时间，从两个匹配的VehicleMovementEvent对象中收集到车辆出现在x区域。我只想处理整个列表，或者什么都不处理，所以交易似乎是合适的。

我不经常在代码中使用事务，那么，我这样做对吗?特别是w.r.t.隔离级别等

var opts = new TransactionOptions { IsolationLevel = IsolationLevel.RepeatableRead, Timeout = new TimeSpan(0, 0, 10, 0) };
using (var scope = new TransactionScope(TransactionScopeOption.RequiresNew, opts))
{
    var vehicleMovements = startsbatch.Movements
                                .Where(m => m.MovementType.Direction == VehicleMovementEventType.Entry)
                                .OrderBy(m => m.EmpNo)
                                .ThenBy(m => m.MovementDateTime);

    presenceBatch.StartDateTime = DateTime.Now;
    presenceBatch.MovementBatch = startsbatch;
    _dbContext.VehiclePresenceBatches.Add(presenceBatch);
    _procTrace.TraceInformation("New VehiclePresencesBatch created. Id: {0}.", presenceBatch.Id);
    foreach (var movement in vehicleMovements)
    {
        var presence = new VehiclePresence 
                            {
                                PresenceBatch = presenceBatch,
                                EmpNo = movement.EmpNo,
                                Location = movement.Location,
                                StartDateTime = movement.MovementDateTime,
                                StartMovementBatchId = movement.BatchId,
                                StartMovementLineId = movement.LineId,
                                StartMovementId = movement.Id
                            };
        _dbContext.VehiclePresences.Add(presence);
        returnList.Add(presence);
    }
    _dbContext.SaveChanges();
    scope.Complete();
    _procTrace.TraceInformation("{0} VehicleMovements processed. {1} VehiclePresences created", vehicleMovements.Count(), returnList.Count);
}