Editing International E-road network (section)

===Exceptions===
[[Image:Autostrada del Sole - Italy - panoramio.jpg|thumb|The [[European route E45]] near [[Cassino]], Italy]]

In the first established and approved version, the road numbers were well ordered. Since then a number of exceptions to this principle have been allowed.

Two Class-A roads, [[European route E6|E6]] and [[European route E4|E4]] were originally scheduled to be renamed into [[European route E47|E47]] and [[European route E55|E55]], respectively. However, since Sweden and Norway have integrated the E-roads into their national networks, signposted as E6 and E4 throughout, a decision was made to keep the pre-1992 numbers for the roads in those two countries. These exceptions were granted because of the excessive expense connected with re-signing not only the long routes themselves, but also the associated road network in the area. The new numbers are, however, used from [[Denmark]] and southward, though, as do other European routes within [[Scandinavia]]. These two roads are the most conspicuous exceptions to the rule that even numbers signify west–east E-roads.

Further exceptions are: 
*[[European route E67|E67]], going from [[Finland]] to the [[Czech Republic]] (wrong side of [[European route E75|E75]] and [[European route E77|E77]]), assigned around year 2000, simply because it was best available number for this new route. 
*Most of [[European route E63|E63]] in [[Finland]] (wrong side of E75)
* Part of [[European route E8|E8]] in Finland on the wrong side of [[European route E12|E12]] after a lengthening around 2002  
*[[European route E82|E82]] (Spain and Portugal, wrong side of [[European route E80|E80]]). 
These irregularities exist just because it is hard to maintain good order when extending the network, and the UNECE want to avoid changing road numbers.

Because the [[Socialist People's Republic of Albania]] refused to participate in international treaties such as the AGR, it was conspicuously excluded from the route scheme, with [[European route E65|E65]] and [[European route E90|E90]] making noticeable detours to go around it. In the 1990s, Albania opened up to the rest of Europe, but only ratified the AGR in August 2006, so its integration into the E-road network remains weak.