After the crash, an investigative team from the UK Department for Transport Air Accidents Investigation Branch attended the scene in co-operation with Strathclyde Police. The wreckage of the helicopter was removed to Farnborough for further forensic investigation. A report into the accident was published on 12 February 2009. In it, the AAIB did not reach a definite conclusion as to the cause of the accident, stating instead that "the helicopter crashed in a wooded valley while manoeuvering at high speed and low height. It was intact prior to impact, and the available evidence indicated that the engine was delivering power. The cause of the accident was not positively determined. Although no technical reason was found to explain the accident, a technical fault could not be ruled out entirely. However, it is more likely that the pilot attempted a turning manoeuvre at low height, during which the helicopter deviated from its intended flight path; whether due to the pilot encountering handling difficulties, misjudgement, spatial disorientation, distraction or a combination of such events. There were indications that the pilot had started a recovery but, with insufficient height in which to complete it, the helicopter struck trees in the valley and crashed, killing all four occupants."
The main change over that period has been in the cars, and in the professionalisation and commercialisation of the sport. Manufacturers had entered works cars in rallies, and in their forerunner and cousin events, from the very beginning: the 1894 Paris-Rouen was mainly a competition between them, while the Thousand Mile Trial of 1900 had more trade than private entries.
Initially, most of the major postwar rallies were fairly gentlemanly, but the organisers of the French Alpine and the Liège (which moved its turning point from Rome into Yugoslavia in 1956) straight away set difficult time schedules: the Automobile Club de Marseille et Provence laid on a long tough route over a succession of rugged passes, stated that cars would have to be driven flat out from start to finish, and gave a coveted Coupe des Alpes ("Alpine Cup") to anyone achieving an unpenalised run; while Belgium's Royal Motor Union made clear no car was expected to finish the Liège unpenalised – when one did (1951 winner Johnny Claes in a Jaguar XK120) they tightened the timing to make sure it never happened again. These two events became the ones for "the men" to do. The Monte, because of its glamour, got the media coverage and the biggest entries (and in snowy years was also a genuine challenge); while the Acropolis took advantage of Greece's appalling roads to become a truly tough event. In 1956 came Corsica's Tour de Corse, 24 hours of virtually non-stop flat out driving on some of the narrowest and twistiest mountain roads on the planet – the first major rally to be won by a woman, Belgium's Gilberte Thirion, in a Renault Dauphine.[unreliable source?]
Other rallies provide organizer-created "route notes" also referred to as "stage notes" and disallow reconnaissance and use of other pacenotes. These notes are usually created using a predetermined pacenote format, from which a co-driver can optionally add comments or transpose into other pacenote notations. Many North American rallies do not conduct reconnaissance but provide stage notes through the use of the Jemba Inertia Notes System, due to time and budget constraints.
In an attempt to cut costs, since 2006 new regulations required mechanical front and rear differentials, while the central differential remained active. Active suspension and water injections were also prohibited. Cars entered by a manufacturer had to be equipped with the same engine for two rallies; further limitations were imposed on the changing of some parts, including suspension, steering, turbochargers and gearboxes.
Rallies usually present a multitude of moneymaking opportunities for investors because prices are generally rising across the board. But rallies don’t last forever, and they don’t always give advance notice of their arrival, so the investor must know when to buy and when to sell to maximize his or her profits. This means the investor must attempt to "time the market" or gauge when a rally has begun and when it is ending.
The funeral for Colin and Johnny took place on 26 September at Daldowie Crematorium near Glasgow, conducted by the Rev Tom Houston, who had married the McRaes, and the Rev Steven Reid, chaplain at Johnny's school. An address was given by Robbie Head, a former rally driver and commentator who was a close friend of McRae's, with the Rev Houston giving the benediction. McRae's niece and nephews performed the tune Highland Cathedral, a popular funeral song. The song "(Sittin' on) the Dock of the Bay" by Otis Redding, a favourite song of McRae's, was played when the family entered the chapel (coincidentally, Redding himself also died in an air crash). The Proclaimers' song "I'm on My Way" was played when they left. Colin and Johnny McRae were cremated in the same coffin. Among the attendees at the funeral were fellow Scottish racing drivers Jackie Stewart and Dario Franchitti.