TC1 @ 259165 667870 (Outside the Police Station)

Drive carefully around Glasgow; 13 ROTten policemen will be observing.

Solve and mark your route at Zoom 4.

This section is also "timed" to the second.

ONEYBPUONEQBJVRQRAZNEXNYYNAQREERQABPXFGBALUHEFGXVAOHPXOLFUBGNYYNAQREN

FUSVRYQSEHVAFYBLGBEESVAYNFPNEYVFYRPBKUVYYONAXIVAGAREUNEIRLOBEEBARNTYROB

EEBARYYRFZREROBAUVYYRYYRFZRERQRAUNZNHPXYNAQRYYRFZRERPNYQNEINANHPXYNAQF

NYZBANQREJRAGPNYQNEINAXVYYRNEAFNENPRANEQBPUONEQBJVRPNEORGUGNAABPXUBONE

GONEQBJVRRYYRFZRERCNAZHERORAIVRJZHENABPNVGUARFFZHENABYRLQRA

TC2 @ Give Way to A81.

There are 15 PCs on route.

I suppose another educational teaser.
ROT13 ("rotate by 13 places", sometimes hyphenated ROT-13) is a simple substitution cipher used in online forums as a means of hiding spoilers, punchlines, puzzle solutions, and offensive materials from the casual glance.
The geocachers who entered would have had no trouble here since it is the encoding system used to conceal geocache hints.
A<>N, B<>O, C<>P, D<>Q etc.... so A is coded as N and N is coded as A; B is coded as O and O is coded as B, and so on.

Decoding gave you the following STREETS to visit
BARLOCH BARDOWIE DENMARK ALLANDER REDNOCK STONYHURST KINBUCK BYSHOT ALLANDER ASHFIELD FRUINS LOY TORR FINLAS CARLISLE COXHILL BANK VINTNER HARVEY BORRON EAGLE BORRON ELLESMERE BONHILL ELLESMERE DENHAM AUCKLAND ELLESMERE CALDARVAN AUCKLAND SALMONA DERWENT CALDARVAN KILLEARN SARACEN ARDOCH BARDOWIE CARBETH TANNOCK HOBART BARDOWIE ELLESMERE PANMURE BENVIEW MURANO CAITHNESS MURANO LEYDEN

A few took issue with the position of TC2. You had to travel the length of Leydon Street to the (gated?) A81, not along the "yellow" which is designated B808 Queen Margaret Drive.

Best on Route Card: Iain Tullie in 1:26:08.
Least Visited Control: PC15