Saw dork or drunk showing what may hold drivers up (9)
I believe the answer is:
roadworks
'what may hold drivers up' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'saw dork or drunk' is the wordplay.
'drunk' indicates an anagram.
'saw'+'dork'+'or'='sawdorkor'
'sawdorkor' anagrammed gives 'ROADWORKS'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for roadworks that I've seen before include "holding up travellers" , "Street repairs" , "reason for traffic hold-up" , "What delay motorists" , "They hold traveller up" .)